Stargate SG-1 s05e06 Episode Script
Rite of Passage
Cassandra! I'm not imagining it.
|She was here, was she not? Almost the entire time|she was opening presents.
- Cassie!|- What? I thought you were wearing|the top that Sam bought you.
OK.
h.
Well, that's, like, for school.
- Hey.
Make a wish.
|- Yeah.
- Dominic's waiting.
|- Fine.
Invite him in.
I'm sure he'd love a piece of birthday cake|that Sam went to all the trouble to bake.
- Buy.
|- Bring.
- I'd love to meet him.
|- You said I could go.
Yeah, I did.
After.
We're meeting a bunch of people.
Considering you have not been feeling|well, you're lucky I'm letting you out at all.
Fine.
- You know, I could just|- No.
She is going to have a piece of birthday|cake.
You stay right where you are.
- Coffee?|- Yes, please.
They're not letting me leave yet, so if you|wanna go and meet up with everybody Wait a second.
Here.
Happy birthday.
- It's just like the ones from class.
|- Yeah, well, you said it was pretty, so This one's for decoration, though.
|I thought you could put it in your room.
- (Cassandra drops to ground)|- Cassandra? Help! - What happened?|- Nothing.
She just fell.
She has a temperature.
|What was she doing when she "fell"? - I kissed her.
|- Kissed her?! It's her birthday, all right? Look, the light|just exploded and she just passed out.
I wanna get her to the infirmary.
|Get the car keys.
Cass? Baby? Cassie? Cassie.
- How's she doing?|- Her fever still hasn't come down.
Sam, I need to get a sample of your blood.
Cassandra's blood work shows|the presence of a retrovirus.
- Didn't she just get over the flu?|- Whatever this is, it isn't the flu.
Is there a causal relationship|between the retrovirus and the EM field? Possibly.
What? Cassandra's body is generating|a low-level electromagnetic field.
It's been spiking.
That could be|why the light exploded on the porch.
And why I can't do an MRI to find out what|other effects this retrovirus is having.
- Mom?|- I'm here.
I couldn't finish the harvest.
That's OK.
K.
I have to go into the forest.
It's OK.
K, Cassie.
- Do I need to quarantine the base?|- I don't think it's contagious.
Major Carter and I show|no evidence of the retrovirus.
Then where did Cassandra contract it? - I'm guessing her home planet.
|- She has not been there in several years.
Retroviruses can exist in the body for|years before the first symptoms appear.
When it emerges, it starts to rewrite|the individual's DNA in order to replicate.
I've compared this with every retrovirus|on record.
It doesn't match any of them.
So there's obviously no vaccine.
I've been giving her antiviral|medications, but her tests show that the virus is spreading|into her cerebrospinal fluid.
At this moment, I'm more|concerned about brain damage.
I just finished going through|SG-7's reports from P8X-987.
- Morning.
|- Morning.
OK.
n Cassandra's planet, SG-7 witnessed|two incidents of fever and hallucination in teenagers Cassandra's age.
The villagers called it the "mind fire".
|I found some digital video footage.
Hurry! This way! She's overhere! - What happened?|- We werejust walking along Shejust dropped and started convulsing.
|What's wrong with her?.
- There's more, but you get the idea.
|- How did they treat it? SG-7 offered medicine, but they believed|the children were touched by gods - and interfering would tempt retribution.
|- What happened to 'em? They were sent alone to the forest nearby.
|After several days they came back, cured.
- How?|- SG-7 tried to find out, but the elders insisted the child|had to go alone as a religious rite.
Cassandra talked about|going into the forest.
- She was delirious.
|- Well, it's worth checking out, sir.
When we saw P8X-987, the atmosphere|was contaminated by the Goa'uld Nirrti.
Well, that was four years ago.
|The toxin could be nonpersistent.
But we can send a MALP to be sure.
Sir? It's worth a try.
(Daniel) Here's something.
It's a hand print.
A fire burned here.
Maybe we should collect|samples of local vegetation.
There might be|a natural cure around here.
Yeah.
Let's collect some of that flora.
Hello? Carter? Daniel? I believe we are in a Goa'uld laboratory.
- Whose, do you think?|- Nirrti.
Yeah.
It's OK.
K.
It's just It's us.
- So where are we?|- I believe we're in the laboratory of Nirrti.
Sir, if this is where|the children ended up - You're right about that.
|- She didn't finish her sentence.
This place is what|the initiation rite was all about.
Hankan children with the mind fever|wander alone into the forest.
It gets dark.
They're drawn to the hand print|on the tree, then to the warm fire.
- Then the rings sweep them to this lab.
|- And then they come back cured.
- Nirrti cured 'em?|- Yeah.
It makes sense.
- No, it doesn't.
|- Indeed.
It seems a plausible explanation.
No.
She killed everyone|on this planet except Cassie.
Why would she cure a bunch of kids? If I'm reading this right,|it was part of some experiment.
Now, see, that sounds like a Goa'uld.
Nirrti was a prisoner of the System Lords.
Which means she's in no position|to help us, even if she would.
OK.
h, boy.
I did that.
Let's take it with us.
Cassie? - Cassandra, what are you doing?|- I have to go.
- You're not well.
|- I have to go to the forest.
- I need you to get back into bed, OK.
K?|- You're not my mother.
Then what have I been to you|these past few years? - You don't understand.
|- Listen to me.
If nothing else, I am your doctor.
Let's go.
So what? I care about what happens to you.
Honey,|don't you know what you mean to me? - Don't you get it? It doesn't matter!|- It's all that matters.
- Please, let me try and help you.
|- You can't.
- If you wanna help me, then let me go!|- OK.
K.
Just hear me out.
Let's get you back into bed,|and then we'll talk, OK.
K? - SG-1 will be back soon.
Then|- No! Leave me alone! Cassie! No, no, no, no, no, no, no, no.
|Let me go, let me go, let me go.
- I can't do that!|- You're killing me! (alarm) - Major.
|- Colonel OK.
'Neill wanted me to report.
Daniel and Teal'c wanted|more time to search the lab.
- Let's hope they find something.
|- Is she getting worse? You should see for yourself.
We had to move her in here.
- Is she still running a fever?|- It seems to have peaked.
But her blood work says otherwise.
There's no antibodies.
No indication her|body's fighting this.
Just more retrovirus.
- Does she know what's happening?|- She seems driven to go to the planet.
I don't know if that's instinctual|or a side effect of this retrovirus.
What are we gonna tell her? Hey.
How are you feeling? Any better? Why are you keeping me in here? We have to.
Your body is generating|something called an EM field.
You can see the effect|it's having on the monitors.
So this room is shielded|from the rest of the base.
If you let me go back to the planet,|then that won't happen any more.
- That's not true.
|- You don't know that.
You don't know anything.
You're just|keeping me here because you're afraid.
We found the place where the initiation|rite was supposed to happen.
Then let me go there.
We think the place you feel drawn to|led to a Goa'uld laboratory.
- OK.
ne that belonged to Nirrti.
|- She killed everyone in my village.
- Yeah.
|- She also tried to use you to kill us.
We think she used your initiation ritual to|experiment on the children of your planet.
- Why?|- We don't know.
It's possible the retrovirus you're|carrying was part of her experiment.
What was the experiment? All we know so far|is that this retrovirus is changing the way your cells|generate electrical fields.
So your body's generating heat, and your|EEG shows your brain activity increasing.
You don't know why, do you? No.
- And now she's gone.
|- Yes, she is.
So you won't be able to stop it.
We didn't say that.
What's this for? What do you think it is for? - (Daniel) "Evolution"|- What? "of the Hok'tar Hok'tar"|Teal'c, what's Hok'tar? I have not heard that word in many years.
It refers to children|that underwent the initiation rite, so it obviously has something|to do with the children Hello? Sorry, guys.
|I think I may have just done that.
Do it again.
It's time to go.
Hey, kiddo.
- It's Saturday.
|- So? So, every other Saturday, at least|while I'm on Earth, we play chess.
And since I'm on Earth and it's Saturday I know what's happening to me.
OK.
h.
OK.
K.
What? I'm changing into something.
And there's nothing you can do to stop it.
You know how me and your mom feel|when someone issues a challenge.
Dr Fraiser isn't my real mother.
She died when Nirrti poisoned my village.
I know that.
Janet knows that too.
- And please, don't call her Dr Fraiser.
|- Why? Because she loves you|and she deserves better.
- We all love you, for that matter.
|- That doesn't change anything.
You're wrong about that.
It's different now.
I'm different now.
I can do things.
- How did you do that?|- I just thought it.
I thought I wanted a knight|and it flew into my hand.
Jack calls 'em horses.
Yeah, well, that's Colonel OK.
'Neill for you.
He always pretends|he's not as smart as he really is.
You know, if you take a close look,|they really are horses.
What do you see|when you look at me now? I see you.
Until your head starts spinning|around, and probably even then, I will still see you.
How can she do that? Magnets.
Magnets.
Each of those pieces|has a tiny magnet in the bottom to hold it on the board, like when|you're driving, so they don't rattle off.
Anyway, every one of those magnets|has a little electrical field around it.
That's how she was able|to manipulate 'em.
Magnets.
They do look like horses.
I have no idea how she was able|to do it physiologically, sir.
Actually, Teal'c filled me in|on something that might explain that.
"Hok'tar" is a hybrid|of two Goa'uld words.
"Hok", which means advanced, and|"tar", which I believe is a sort of slang.
- For?|- Human.
So, essentially,|it's "advanced human".
"Hok Tauri.
" Nirrti studied the children of Hanka because she believed|they were evolving into Hok'tar.
You're saying Cassandra is becoming|some form of advanced human.
And the retrovirus is the catalyst.
An advanced human would be|a powerful host for the Goa'uld.
Which explains why Nirrti|was experimenting.
Also why she exterminated|the population when we came.
She didn't want her experiment exposed.
Prior to our arrival on P8X-987,|and for as long as SG-7 was there, no villager showed advanced intelligence|or the ability to manipulate EM fields.
So Nirrti created the retrovirus|in an attempt to engineer her own host.
It seems inconceivable|anybody could do that.
It never worked.
|According to all the reports, the children went into the forest sick|and came out well.
If this was a transformation|or evolutionary process, at some point it was stopped.
By Nirrti.
Why would she do that? The retrovirus rewrites DNA.
If the carrier died before they passed on|the altered genes, no evolution.
- So the experiment was long term.
|- With each generation closer to a Hok'tar.
So how far along is Cassandra? What if maybe she really is|transforming into something else? - She thinks so.
|- Whatever she thinks, her fever is rising.
Admittedly more slowly, and she seems|to be able to handle it better, but I can't control it.
Let's find the answers.
Dismissed.
Cassandra? What are you doing? It helps, to do this.
How? It's almost like the heat is leaving|my body and going into the chess piece.
You haven't found a cure, have you? - No.
We're still trying.
|- It's all right.
No, it's not.
We may still learn something|from the biosamples SG-1 brought back.
They might help your body|produce antibodies.
I want this to happen, Janet.
- Don't say that.
|- It's going to happen anyway.
- You're ill.
|- You know that it's more than that now.
I can feel a power inside me.
It's only the beginning.
And your body is undergoing|an enormous physical strain.
- You think it's gonna kill me?|- I am worried about that possibility, yes.
- I don't care.
|- Well, you should.
- I know the limits of the human body.
|- Maybe I'm not human any more.
- OK.
f course you are.
|- Dying may be part of the transformation.
I don't care whether it is or not! - I'm sorry.
|- (sighs) Sweetheart, sometimes|when a person is sick, it's important for them to fight.
I want you to fight this.
OK.
K? That can't be right.
|The EM field is interfering.
No.
She'll be able to control that now.
I ran the test three times.
The results were|consistent, and it agrees with the EEG.
That's a 25 per cent higher|level of activity than normal.
- How can her body sustain that?|- She can channel the heat from her body.
Don't ask me how.
But I don't know how|long she's gonna be able to keep it up.
What I'd like her to do is sleep.
|She's been awake for 30 hours straight.
- I was about to go and see her.
|- Thank you.
Hey.
I hear you don't wanna sleep.
|You want some company? You wouldn't leave.
When the Goa'uld planted the bomb|inside me, you wouldn't leave.
Even though your orders were to|leave me there alone, you stayed with me.
- Yeah.
|- Why? I don't know.
Just an instinct.
- That I was gonna be OK.
K?|- Yeah, I think so.
But you didn't know for sure.
No.
Well that's how I feel about|what's happening to me now.
- Do you understand?|- Yeah, I think I do.
- Want me to stay with you for a while?|- It's not time yet.
Don't say that.
Well, when it is time, will you be here? I promise.
I think I can sleep now, for a little while.
OK.
K.
- Sam?|- I think she's asleep.
Good.
Listen.
The bodies of the villagers -|what happened to them? They were cremated.
|We sent a team back.
So there could be a bone fragment.
If we find one from someone who's been|through the initiation, antibodies may - That was four years ago.
The chances|- (alarm) OK.
h, no.
Cassandra? - It was a Goa'uld.
|- What? I was asleep.
I thought it was a nurse.
- But I did sense its presence.
|- I haven't sensed anything.
It was after you left.
At first no one was|there.
When it got closer, I saw someone.
This is a code three alert.
We need zats|and TERs in isolation room four - now.
- Are you all right?|- It ran away when I screamed.
- Major?|- It appears there's a Goa'uld on the base.
- What?|- How is that possible? Nirrti possesses the technology|to become invisible.
Cronus is dead.
If he was|the System Lord holding her prisoner So she's out.
The rings.
It was her.
|She came through the Stargate with us.
She was waiting for us|in her lab the whole time.
We may have inadvertently triggered|a device alerting her to our presence.
Go level by level.
Check everything.
|Keep in radio contact.
If you locate her, do not shoot to kill.
- Colonel?|- I'm stayin' here, sir.
I figure, you fought her off the first time,|I'm safer here with you.
She was here the whole time|you've been back.
- We'll find her.
|- No, she's right.
Why did she wait until now|to come after Cassandra? Level 22 is clear.
- (Teal'c) Level 21, clear.
|- Roger that.
- She wanted to check on her experiment.
|- We don't know what she wants.
No.
If the transformation were going to|kill me, she would've just let it happen.
- Don't you see?|- Honey, not now.
- No, but it did work.
|- Cassandra.
No.
Look out! Easy! We need her alive.
Security to iso room four.
|All search teams stand down.
Cassie? Cassie, don't do this.
Please get her outta here.
Come on, let's move! Roll her over.
Easy.
- What's gonna happen to Cassandra?|- (distorted) What is her condition? She just lost consciousness.
Then the end is very near.
If she dies so do you.
And what do you offer in return? I don't think you're|in any position to bargain.
I am in the position to save the life|of a child you hold dear.
- Release me.
|- We can't do that.
General With my invisibility device intact.
I also require a sample of her blood.
Absolutely not.
Those are my terms.
- She says she can help Cassandra.
|- If we trust her.
No, if we let her go.
Do you believe that she can actually help? Seeing as how we don't have a choice,|I guess it's worth a shot.
- What is General Hammond going to do?|- He hasn't decided yet.
I really need to get back|and see Cassandra.
We all know how tough this has been|for you, so if you need anything Thanks.
All right.
Give me|70 milligrams of dantrolene.
- Doctor?|- Now! - Mom?|- I'm here.
We're just giving you something else|to try and get your fever down.
It's happening.
OK.
K.
I want you to do what we talked|about, OK.
K? I want you to fight this.
- I don't wanna fight it.
|- You have to.
Honey, your body's not gonna be able to|survive what this retrovirus is trying to do.
- Where's Sam?|- She's gone to try to get Nirrti to help.
No.
Let it happen.
Let it happen! - (groans)|- Drop ten of Valium.
(nurse) Valium's in.
(DrFraiser cries out) Temperature's 106.
The dantrolene is not working? General, with all due respect, it's not|like we're negotiating with terrorists.
It's exactly that.
You're letting|your emotions get in the way.
- Yes, I am.
Shouldn't you be?|- Jack Until yesterday we didn't know|Nirrti was still alive.
Exactly.
Who cares if we let her go? What difference does it make?|It's just one more Goa'uld runnin' around.
If we were to allow Nirrti to leave|with a sample of Cassandra's blood, she could well create an advanced host|and become dangerously powerful.
- I agree with General Hammond.
|- What? The life of a child may be sacrificed, but Nirrti possesses valuable information|that would be lost if we let her leave.
General Hammond would like me|to check in on her.
Argh! - Teal'c, we're talking about Cassandra.
|- OK.
f that I am aware.
But her sacrifice would benefit|both of our peoples.
Nirrti has information|that could help us defeat the Goa'uld.
We'll find another way.
We may never have a Goa'uld|as our prisoner again.
Sir, you know what Cassandra has|gone through because of the Goa'uld.
If we're gonna put|what might happen over her life It's time to pack it in.
I agree.
(intercom) General Hammond|to the holding room.
- Dr Fraiser, stand down.
|- I can't do that, sir.
I don't have a choice.
Janet, don't do this.
I can't help Cassandra.
She can.
SG-1 has convinced me to make a deal|for Cassandra's life.
This isn't necessary.
Then you agree to my terms.
Just one.
OK.
nce you've cured Cassandra|of her illness, you'll be free to go.
- And how do I know you will honour this?|- You have only my word.
Not enough.
Then I should remind you that the woman|holding the gun is Cassandra's mother.
You have waited too long.
You try again.
- It is done.
|- (Carter) Vital signs returning to normal.
- Mom?|- It's OK.
K.
I'm here.
I have honoured my part.
Let's go to the gate.
We've never dialled these coordinates.
I|sort of hope you know what you're doin'.
It is not my final destination.
Without a sample of her blood,|I will have to begin my experiment again.
Aw, nuts.
At least you have honoured|this much of our bargain.
In your place, I doubt|I would have done the same.
I'll keep that thought alive.
Hey, Janet.
How's our patient? Bored.
The homework stacked up a bit,|but other than that she's just fine.
- I get to take her home tonight.
|- Ah Dominic awaits.
- Stop it.
|- Come on.
That last kiss was impressive.
- Stop it!|- Lights exploded overhead.
Stop it! - It's Saturday.
|- OK.
K.
But I won't be able to move the piece|around by thinking about it.
Sorry.
Good.
Then we're even.
Cassandra! I'm not imagining it.
|She was here, was she not? Almost the entire time|she was opening presents.
- Cassie!|- What? I thought you were wearing|the top that Sam bought you.
Oh.
Well, that's, like, for school.
- Hey.
Make a wish.
|- Yeah.
- Dominic's waiting.
|- Fine.
Invite him in.
I'm sure he'd love a piece of birthday cake|that Sam went to all the trouble to bake.
- Buy.
|- Bring.
- I'd love to meet him.
|- You said I could go.
Yeah, I did.
After.
We're meeting a bunch of people.
Considering you have not been feeling|well, you're lucky I'm letting you out at all.
Fine.
- You know, I could just|- No.
She is going to have a piece of birthday|cake.
You stay right where you are.
- Coffee?|- Yes, please.
They're not letting me leave yet, so if you|wanna go and meet up with everybody Wait a second.
Here.
Happy birthday.
- It's just like the ones from class.
|- Yeah, well, you said it was pretty, so This one's for decoration, though.
|I thought you could put it in your room.
- (Cassandra drops to ground)|- Cassandra? Help! - What happened?|- Nothing.
She just fell.
She has a temperature.
|What was she doing when she "fell"? - I kissed her.
|- Kissed her?! It's her birthday, all right? Look, the light|just exploded and she just passed out.
I wanna get her to the infirmary.
|Get the car keys.
Cass? Baby? Cassie? Cassie.
- How's she doing?|- Her fever still hasn't come down.
Sam, I need to get a sample of your blood.
Cassandra's blood work shows|the presence of a retrovirus.
- Didn't she just get over the flu?|- Whatever this is, it isn't the flu.
Is there a causal relationship|between the retrovirus and the EM field? Possibly.
What? Cassandra's body is generating|a low-level electromagnetic field.
It's been spiking.
That could be|why the light exploded on the porch.
And why I can't do an MRI to find out what|other effects this retrovirus is having.
- Mom?|- I'm here.
I couldn't finish the harvest.
That's OK.
I have to go into the forest.
It's OK, Cassie.
- Do I need to quarantine the base?|- I don't think it's contagious.
Major Carter and I show|no evidence of the retrovirus.
Then where did Cassandra contract it? - I'm guessing her home planet.
|- She has not been there in several years.
Retroviruses can exist in the body for|years before the first symptoms appear.
When it emerges, it starts to rewrite|the individual's DNA in order to replicate.
I've compared this with every retrovirus|on record.
It doesn't match any of them.
So there's obviously no vaccine.
I've been giving her antiviral|medications, but her tests show that the virus is spreading|into her cerebrospinal fluid.
At this moment, I'm more|concerned about brain damage.
I just finished going through|SG-7's reports from P8X-987.
- Morning.
|- Morning.
On Cassandra's planet, SG-7 witnessed|two incidents of fever and hallucination in teenagers Cassandra's age.
The villagers called it the "mind fire".
|I found some digital video footage.
Hurry! This way! She's overhere! - What happened?|- We werejust walking along Shejust dropped and started convulsing.
|What's wrong with her?.
- There's more, but you get the idea.
|- How did they treat it? SG-7 offered medicine, but they believed|the children were touched by gods - and interfering would tempt retribution.
|- What happened to 'em? They were sent alone to the forest nearby.
|After several days they came back, cured.
- How?|- SG-7 tried to find out, but the elders insisted the child|had to go alone as a religious rite.
Cassandra talked about|going into the forest.
- She was delirious.
|- Well, it's worth checking out, sir.
When we saw P8X-987, the atmosphere|was contaminated by the Goa'uld Nirrti.
Well, that was four years ago.
|The toxin could be nonpersistent.
But we can send a MALP to be sure.
Sir? It's worth a try.
(Daniel) Here's something.
It's a hand print.
A fire burned here.
Maybe we should collect|samples of local vegetation.
There might be|a natural cure around here.
Yeah.
Let's collect some of that flora.
Hello? Carter? Daniel? I believe we are in a Goa'uld laboratory.
- Whose, do you think?|- Nirrti.
Yeah.
It's OK.
It's just It's us.
- So where are we?|- I believe we're in the laboratory of Nirrti.
Sir, if this is where|the children ended up - You're right about that.
|- She didn't finish her sentence.
This place is what|the initiation rite was all about.
Hankan children with the mind fever|wander alone into the forest.
It gets dark.
They're drawn to the hand print|on the tree, then to the warm fire.
- Then the rings sweep them to this lab.
|- And then they come back cured.
- Nirrti cured 'em?|- Yeah.
It makes sense.
- No, it doesn't.
|- Indeed.
It seems a plausible explanation.
No.
She killed everyone|on this planet except Cassie.
Why would she cure a bunch of kids? If I'm reading this right,|it was part of some experiment.
Now, see, that sounds like a Goa'uld.
Nirrti was a prisoner of the System Lords.
Which means she's in no position|to help us, even if she would.
Oh, boy.
I did that.
Let's take it with us.
Cassie? - Cassandra, what are you doing?|- I have to go.
- You're not well.
|- I have to go to the forest.
- I need you to get back into bed, OK?|- You're not my mother.
Then what have I been to you|these past few years? - You don't understand.
|- Listen to me.
If nothing else, I am your doctor.
Let's go.
So what? I care about what happens to you.
Honey,|don't you know what you mean to me? - Don't you get it? It doesn't matter!|- It's all that matters.
- Please, let me try and help you.
|- You can't.
- If you wanna help me, then let me go!|- OK.
Just hear me out.
Let's get you back into bed,|and then we'll talk, OK? - SG-1 will be back soon.
Then|- No! Leave me alone! Cassie! No, no, no, no, no, no, no, no.
|Let me go, let me go, let me go.
- I can't do that!|- You're killing me! (alarm) - Major.
|- Colonel O'Neill wanted me to report.
Daniel and Teal'c wanted|more time to search the lab.
- Let's hope they find something.
|- Is she getting worse? You should see for yourself.
We had to move her in here.
- Is she still running a fever?|- It seems to have peaked.
But her blood work says otherwise.
There's no antibodies.
No indication her|body's fighting this.
Just more retrovirus.
- Does she know what's happening?|- She seems driven to go to the planet.
I don't know if that's instinctual|or a side effect of this retrovirus.
What are we gonna tell her? Hey.
How are you feeling? Any better? Why are you keeping me in here? We have to.
Your body is generating|something called an EM field.
You can see the effect|it's having on the monitors.
So this room is shielded|from the rest of the base.
If you let me go back to the planet,|then that won't happen any more.
- That's not true.
|- You don't know that.
You don't know anything.
You're just|keeping me here because you're afraid.
We found the place where the initiation|rite was supposed to happen.
Then let me go there.
We think the place you feel drawn to|led to a Goa'uld laboratory.
- One that belonged to Nirrti.
|- She killed everyone in my village.
- Yeah.
|- She also tried to use you to kill us.
We think she used your initiation ritual to|experiment on the children of your planet.
- Why?|- We don't know.
It's possible the retrovirus you're|carrying was part of her experiment.
What was the experiment? All we know so far|is that this retrovirus is changing the way your cells|generate electrical fields.
So your body's generating heat, and your|EEG shows your brain activity increasing.
You don't know why, do you? No.
- And now she's gone.
|- Yes, she is.
So you won't be able to stop it.
We didn't say that.
What's this for? What do you think it is for? - (Daniel) "Evolution"|- What? "of the Hok'tar Hok'tar"|Teal'c, what's Hok'tar? I have not heard that word in many years.
It refers to children|that underwent the initiation rite, so it obviously has something|to do with the children Hello? Sorry, guys.
|I think I may have just done that.
Do it again.
It's time to go.
Hey, kiddo.
- It's Saturday.
|- So? So, every other Saturday, at least|while I'm on Earth, we play chess.
And since I'm on Earth and it's Saturday I know what's happening to me.
Oh.
OK.
What? I'm changing into something.
And there's nothing you can do to stop it.
You know how me and your mom feel|when someone issues a challenge.
Dr Fraiser isn't my real mother.
She died when Nirrti poisoned my village.
I know that.
Janet knows that too.
- And please, don't call her Dr Fraiser.
|- Why? Because she loves you|and she deserves better.
- We all love you, for that matter.
|- That doesn't change anything.
You're wrong about that.
It's different now.
I'm different now.
I can do things.
- How did you do that?|- I just thought it.
I thought I wanted a knight|and it flew into my hand.
Jack calls 'em horses.
Yeah, well, that's Colonel O'Neill for you.
He always pretends|he's not as smart as he really is.
You know, if you take a close look,|they really are horses.
What do you see|when you look at me now? I see you.
Until your head starts spinning|around, and probably even then, I will still see you.
How can she do that? Magnets.
Magnets.
Each of those pieces|has a tiny magnet in the bottom to hold it on the board, like when|you're driving, so they don't rattle off.
Anyway, every one of those magnets|has a little electrical field around it.
That's how she was able|to manipulate 'em.
Magnets.
They do look like horses.
I have no idea how she was able|to do it physiologically, sir.
Actually, Teal'c filled me in|on something that might explain that.
"Hok'tar" is a hybrid|of two Goa'uld words.
"Hok", which means advanced, and|"tar", which I believe is a sort of slang.
- For?|- Human.
So, essentially,|it's "advanced human".
"Hok Tauri.
" Nirrti studied the children of Hanka because she believed|they were evolving into Hok'tar.
You're saying Cassandra is becoming|some form of advanced human.
And the retrovirus is the catalyst.
An advanced human would be|a powerful host for the Goa'uld.
Which explains why Nirrti|was experimenting.
Also why she exterminated|the population when we came.
She didn't want her experiment exposed.
Prior to our arrival on P8X-987,|and for as long as SG-7 was there, no villager showed advanced intelligence|or the ability to manipulate EM fields.
So Nirrti created the retrovirus|in an attempt to engineer her own host.
It seems inconceivable|anybody could do that.
It never worked.
|According to all the reports, the children went into the forest sick|and came out well.
If this was a transformation|or evolutionary process, at some point it was stopped.
By Nirrti.
Why would she do that? The retrovirus rewrites DNA.
If the carrier died before they passed on|the altered genes, no evolution.
- So the experiment was long term.
|- With each generation closer to a Hok'tar.
So how far along is Cassandra? What if maybe she really is|transforming into something else? - She thinks so.
|- Whatever she thinks, her fever is rising.
Admittedly more slowly, and she seems|to be able to handle it better, but I can't control it.
Let's find the answers.
Dismissed.
Cassandra? What are you doing? It helps, to do this.
How? It's almost like the heat is leaving|my body and going into the chess piece.
You haven't found a cure, have you? - No.
We're still trying.
|- It's all right.
No, it's not.
We may still learn something|from the biosamples SG-1 brought back.
They might help your body|produce antibodies.
I want this to happen, Janet.
- Don't say that.
|- It's going to happen anyway.
- You're ill.
|- You know that it's more than that now.
I can feel a power inside me.
It's only the beginning.
And your body is undergoing|an enormous physical strain.
- You think it's gonna kill me?|- I am worried about that possibility, yes.
- I don't care.
|- Well, you should.
- I know the limits of the human body.
|- Maybe I'm not human any more.
- Of course you are.
|- Dying may be part of the transformation.
I don't care whether it is or not! - I'm sorry.
|- (sighs) Sweetheart, sometimes|when a person is sick, it's important for them to fight.
I want you to fight this.
OK? That can't be right.
|The EM field is interfering.
No.
She'll be able to control that now.
I ran the test three times.
The results were|consistent, and it agrees with the EEG.
That's a 25 per cent higher|level of activity than normal.
- How can her body sustain that?|- She can channel the heat from her body.
Don't ask me how.
But I don't know how|long she's gonna be able to keep it up.
What I'd like her to do is sleep.
|She's been awake for 30 hours straight.
- I was about to go and see her.
|- Thank you.
Hey.
I hear you don't wanna sleep.
|You want some company? You wouldn't leave.
When the Goa'uld planted the bomb|inside me, you wouldn't leave.
Even though your orders were to|leave me there alone, you stayed with me.
- Yeah.
|- Why? I don't know.
Just an instinct.
- That I was gonna be OK?|- Yeah, I think so.
But you didn't know for sure.
No.
Well that's how I feel about|what's happening to me now.
- Do you understand?|- Yeah, I think I do.
- Want me to stay with you for a while?|- It's not time yet.
Don't say that.
Well, when it is time, will you be here? I promise.
I think I can sleep now, for a little while.
OK.
- Sam?|- I think she's asleep.
Good.
Listen.
The bodies of the villagers -|what happened to them? They were cremated.
|We sent a team back.
So there could be a bone fragment.
If we find one from someone who's been|through the initiation, antibodies may - That was four years ago.
The chances|- (alarm) Oh, no.
Cassandra? - It was a Goa'uld.
|- What? I was asleep.
I thought it was a nurse.
- But I did sense its presence.
|- I haven't sensed anything.
It was after you left.
At first no one was|there.
When it got closer, I saw someone.
This is a code three alert.
We need zats|and TERs in isolation room four - now.
- Are you all right?|- It ran away when I screamed.
- Major?|- It appears there's a Goa'uld on the base.
- What?|- How is that possible? Nirrti possesses the technology|to become invisible.
Cronus is dead.
If he was|the System Lord holding her prisoner So she's out.
The rings.
It was her.
|She came through the Stargate with us.
She was waiting for us|in her lab the whole time.
We may have inadvertently triggered|a device alerting her to our presence.
Go level by level.
Check everything.
|Keep in radio contact.
If you locate her, do not shoot to kill.
- Colonel?|- I'm stayin' here, sir.
I figure, you fought her off the first time,|I'm safer here with you.
She was here the whole time|you've been back.
- We'll find her.
|- No, she's right.
Why did she wait until now|to come after Cassandra? Level 22 is clear.
- (Teal'c) Level 21, clear.
|- Roger that.
- She wanted to check on her experiment.
|- We don't know what she wants.
No.
If the transformation were going to|kill me, she would've just let it happen.
- Don't you see?|- Honey, not now.
- No, but it did work.
|- Cassandra.
No.
Look out! Easy! We need her alive.
Security to iso room four.
|All search teams stand down.
Cassie? Cassie, don't do this.
Please get her outta here.
Come on, let's move! Roll her over.
Easy.
- What's gonna happen to Cassandra?|- (distorted) What is her condition? She just lost consciousness.
Then the end is very near.
If she dies so do you.
And what do you offer in return? I don't think you're|in any position to bargain.
I am in the position to save the life|of a child you hold dear.
- Release me.
|- We can't do that.
General With my invisibility device intact.
I also require a sample of her blood.
Absolutely not.
Those are my terms.
- She says she can help Cassandra.
|- If we trust her.
No, if we let her go.
Do you believe that she can actually help? Seeing as how we don't have a choice,|I guess it's worth a shot.
- What is General Hammond going to do?|- He hasn't decided yet.
I really need to get back|and see Cassandra.
We all know how tough this has been|for you, so if you need anything Thanks.
All right.
Give me|70 milligrams of dantrolene.
- Doctor?|- Now! - Mom?|- I'm here.
We're just giving you something else|to try and get your fever down.
It's happening.
OK.
I want you to do what we talked|about, OK? I want you to fight this.
- I don't wanna fight it.
|- You have to.
Honey, your body's not gonna be able to|survive what this retrovirus is trying to do.
- Where's Sam?|- She's gone to try to get Nirrti to help.
No.
Let it happen.
Let it happen! - (groans)|- Drop ten of Valium.
(nurse) Valium's in.
(DrFraiser cries out) Temperature's 106.
The dantrolene is not working? General, with all due respect, it's not|like we're negotiating with terrorists.
It's exactly that.
You're letting|your emotions get in the way.
- Yes, I am.
Shouldn't you be?|- Jack Until yesterday we didn't know|Nirrti was still alive.
Exactly.
Who cares if we let her go? What difference does it make?|It's just one more Goa'uld runnin' around.
If we were to allow Nirrti to leave|with a sample of Cassandra's blood, she could well create an advanced host|and become dangerously powerful.
- I agree with General Hammond.
|- What? The life of a child may be sacrificed, but Nirrti possesses valuable information|that would be lost if we let her leave.
General Hammond would like me|to check in on her.
Argh! - Teal'c, we're talking about Cassandra.
|- Of that I am aware.
But her sacrifice would benefit|both of our peoples.
Nirrti has information|that could help us defeat the Goa'uld.
We'll find another way.
We may never have a Goa'uld|as our prisoner again.
Sir, you know what Cassandra has|gone through because of the Goa'uld.
If we're gonna put|what might happen over her life It's time to pack it in.
I agree.
(intercom) General Hammond|to the holding room.
- Dr Fraiser, stand down.
|- I can't do that, sir.
I don't have a choice.
Janet, don't do this.
I can't help Cassandra.
She can.
SG-1 has convinced me to make a deal|for Cassandra's life.
This isn't necessary.
Then you agree to my terms.
Just one.
Once you've cured Cassandra|of her illness, you'll be free to go.
- And how do I know you will honour this?|- You have only my word.
Not enough.
Then I should remind you that the woman|holding the gun is Cassandra's mother.
You have waited too long.
You try again.
- It is done.
|- (Carter) Vital signs returning to normal.
- Mom?|- It's OK.
I'm here.
I have honoured my part.
Let's go to the gate.
We've never dialled these coordinates.
I|sort of hope you know what you're doin'.
It is not my final destination.
Without a sample of her blood,|I will have to begin my experiment again.
Aw, nuts.
At least you have honoured|this much of our bargain.
In your place, I doubt|I would have done the same.
I'll keep that thought alive.
Hey, Janet.
How's our patient? Bored.
The homework stacked up a bit,|but other than that she's just fine.
- I get to take her home tonight.
|- Ah Dominic awaits.
- Stop it.
|- Come on.
That last kiss was impressive.
- Stop it!|- Lights exploded overhead.
Stop it! - It's Saturday.
|- OK.
But I won't be able to move the piece|around by thinking about it.
Sorry.
Good.
Then we're even.
|She was here, was she not? Almost the entire time|she was opening presents.
- Cassie!|- What? I thought you were wearing|the top that Sam bought you.
OK.
h.
Well, that's, like, for school.
- Hey.
Make a wish.
|- Yeah.
- Dominic's waiting.
|- Fine.
Invite him in.
I'm sure he'd love a piece of birthday cake|that Sam went to all the trouble to bake.
- Buy.
|- Bring.
- I'd love to meet him.
|- You said I could go.
Yeah, I did.
After.
We're meeting a bunch of people.
Considering you have not been feeling|well, you're lucky I'm letting you out at all.
Fine.
- You know, I could just|- No.
She is going to have a piece of birthday|cake.
You stay right where you are.
- Coffee?|- Yes, please.
They're not letting me leave yet, so if you|wanna go and meet up with everybody Wait a second.
Here.
Happy birthday.
- It's just like the ones from class.
|- Yeah, well, you said it was pretty, so This one's for decoration, though.
|I thought you could put it in your room.
- (Cassandra drops to ground)|- Cassandra? Help! - What happened?|- Nothing.
She just fell.
She has a temperature.
|What was she doing when she "fell"? - I kissed her.
|- Kissed her?! It's her birthday, all right? Look, the light|just exploded and she just passed out.
I wanna get her to the infirmary.
|Get the car keys.
Cass? Baby? Cassie? Cassie.
- How's she doing?|- Her fever still hasn't come down.
Sam, I need to get a sample of your blood.
Cassandra's blood work shows|the presence of a retrovirus.
- Didn't she just get over the flu?|- Whatever this is, it isn't the flu.
Is there a causal relationship|between the retrovirus and the EM field? Possibly.
What? Cassandra's body is generating|a low-level electromagnetic field.
It's been spiking.
That could be|why the light exploded on the porch.
And why I can't do an MRI to find out what|other effects this retrovirus is having.
- Mom?|- I'm here.
I couldn't finish the harvest.
That's OK.
K.
I have to go into the forest.
It's OK.
K, Cassie.
- Do I need to quarantine the base?|- I don't think it's contagious.
Major Carter and I show|no evidence of the retrovirus.
Then where did Cassandra contract it? - I'm guessing her home planet.
|- She has not been there in several years.
Retroviruses can exist in the body for|years before the first symptoms appear.
When it emerges, it starts to rewrite|the individual's DNA in order to replicate.
I've compared this with every retrovirus|on record.
It doesn't match any of them.
So there's obviously no vaccine.
I've been giving her antiviral|medications, but her tests show that the virus is spreading|into her cerebrospinal fluid.
At this moment, I'm more|concerned about brain damage.
I just finished going through|SG-7's reports from P8X-987.
- Morning.
|- Morning.
OK.
n Cassandra's planet, SG-7 witnessed|two incidents of fever and hallucination in teenagers Cassandra's age.
The villagers called it the "mind fire".
|I found some digital video footage.
Hurry! This way! She's overhere! - What happened?|- We werejust walking along Shejust dropped and started convulsing.
|What's wrong with her?.
- There's more, but you get the idea.
|- How did they treat it? SG-7 offered medicine, but they believed|the children were touched by gods - and interfering would tempt retribution.
|- What happened to 'em? They were sent alone to the forest nearby.
|After several days they came back, cured.
- How?|- SG-7 tried to find out, but the elders insisted the child|had to go alone as a religious rite.
Cassandra talked about|going into the forest.
- She was delirious.
|- Well, it's worth checking out, sir.
When we saw P8X-987, the atmosphere|was contaminated by the Goa'uld Nirrti.
Well, that was four years ago.
|The toxin could be nonpersistent.
But we can send a MALP to be sure.
Sir? It's worth a try.
(Daniel) Here's something.
It's a hand print.
A fire burned here.
Maybe we should collect|samples of local vegetation.
There might be|a natural cure around here.
Yeah.
Let's collect some of that flora.
Hello? Carter? Daniel? I believe we are in a Goa'uld laboratory.
- Whose, do you think?|- Nirrti.
Yeah.
It's OK.
K.
It's just It's us.
- So where are we?|- I believe we're in the laboratory of Nirrti.
Sir, if this is where|the children ended up - You're right about that.
|- She didn't finish her sentence.
This place is what|the initiation rite was all about.
Hankan children with the mind fever|wander alone into the forest.
It gets dark.
They're drawn to the hand print|on the tree, then to the warm fire.
- Then the rings sweep them to this lab.
|- And then they come back cured.
- Nirrti cured 'em?|- Yeah.
It makes sense.
- No, it doesn't.
|- Indeed.
It seems a plausible explanation.
No.
She killed everyone|on this planet except Cassie.
Why would she cure a bunch of kids? If I'm reading this right,|it was part of some experiment.
Now, see, that sounds like a Goa'uld.
Nirrti was a prisoner of the System Lords.
Which means she's in no position|to help us, even if she would.
OK.
h, boy.
I did that.
Let's take it with us.
Cassie? - Cassandra, what are you doing?|- I have to go.
- You're not well.
|- I have to go to the forest.
- I need you to get back into bed, OK.
K?|- You're not my mother.
Then what have I been to you|these past few years? - You don't understand.
|- Listen to me.
If nothing else, I am your doctor.
Let's go.
So what? I care about what happens to you.
Honey,|don't you know what you mean to me? - Don't you get it? It doesn't matter!|- It's all that matters.
- Please, let me try and help you.
|- You can't.
- If you wanna help me, then let me go!|- OK.
K.
Just hear me out.
Let's get you back into bed,|and then we'll talk, OK.
K? - SG-1 will be back soon.
Then|- No! Leave me alone! Cassie! No, no, no, no, no, no, no, no.
|Let me go, let me go, let me go.
- I can't do that!|- You're killing me! (alarm) - Major.
|- Colonel OK.
'Neill wanted me to report.
Daniel and Teal'c wanted|more time to search the lab.
- Let's hope they find something.
|- Is she getting worse? You should see for yourself.
We had to move her in here.
- Is she still running a fever?|- It seems to have peaked.
But her blood work says otherwise.
There's no antibodies.
No indication her|body's fighting this.
Just more retrovirus.
- Does she know what's happening?|- She seems driven to go to the planet.
I don't know if that's instinctual|or a side effect of this retrovirus.
What are we gonna tell her? Hey.
How are you feeling? Any better? Why are you keeping me in here? We have to.
Your body is generating|something called an EM field.
You can see the effect|it's having on the monitors.
So this room is shielded|from the rest of the base.
If you let me go back to the planet,|then that won't happen any more.
- That's not true.
|- You don't know that.
You don't know anything.
You're just|keeping me here because you're afraid.
We found the place where the initiation|rite was supposed to happen.
Then let me go there.
We think the place you feel drawn to|led to a Goa'uld laboratory.
- OK.
ne that belonged to Nirrti.
|- She killed everyone in my village.
- Yeah.
|- She also tried to use you to kill us.
We think she used your initiation ritual to|experiment on the children of your planet.
- Why?|- We don't know.
It's possible the retrovirus you're|carrying was part of her experiment.
What was the experiment? All we know so far|is that this retrovirus is changing the way your cells|generate electrical fields.
So your body's generating heat, and your|EEG shows your brain activity increasing.
You don't know why, do you? No.
- And now she's gone.
|- Yes, she is.
So you won't be able to stop it.
We didn't say that.
What's this for? What do you think it is for? - (Daniel) "Evolution"|- What? "of the Hok'tar Hok'tar"|Teal'c, what's Hok'tar? I have not heard that word in many years.
It refers to children|that underwent the initiation rite, so it obviously has something|to do with the children Hello? Sorry, guys.
|I think I may have just done that.
Do it again.
It's time to go.
Hey, kiddo.
- It's Saturday.
|- So? So, every other Saturday, at least|while I'm on Earth, we play chess.
And since I'm on Earth and it's Saturday I know what's happening to me.
OK.
h.
OK.
K.
What? I'm changing into something.
And there's nothing you can do to stop it.
You know how me and your mom feel|when someone issues a challenge.
Dr Fraiser isn't my real mother.
She died when Nirrti poisoned my village.
I know that.
Janet knows that too.
- And please, don't call her Dr Fraiser.
|- Why? Because she loves you|and she deserves better.
- We all love you, for that matter.
|- That doesn't change anything.
You're wrong about that.
It's different now.
I'm different now.
I can do things.
- How did you do that?|- I just thought it.
I thought I wanted a knight|and it flew into my hand.
Jack calls 'em horses.
Yeah, well, that's Colonel OK.
'Neill for you.
He always pretends|he's not as smart as he really is.
You know, if you take a close look,|they really are horses.
What do you see|when you look at me now? I see you.
Until your head starts spinning|around, and probably even then, I will still see you.
How can she do that? Magnets.
Magnets.
Each of those pieces|has a tiny magnet in the bottom to hold it on the board, like when|you're driving, so they don't rattle off.
Anyway, every one of those magnets|has a little electrical field around it.
That's how she was able|to manipulate 'em.
Magnets.
They do look like horses.
I have no idea how she was able|to do it physiologically, sir.
Actually, Teal'c filled me in|on something that might explain that.
"Hok'tar" is a hybrid|of two Goa'uld words.
"Hok", which means advanced, and|"tar", which I believe is a sort of slang.
- For?|- Human.
So, essentially,|it's "advanced human".
"Hok Tauri.
" Nirrti studied the children of Hanka because she believed|they were evolving into Hok'tar.
You're saying Cassandra is becoming|some form of advanced human.
And the retrovirus is the catalyst.
An advanced human would be|a powerful host for the Goa'uld.
Which explains why Nirrti|was experimenting.
Also why she exterminated|the population when we came.
She didn't want her experiment exposed.
Prior to our arrival on P8X-987,|and for as long as SG-7 was there, no villager showed advanced intelligence|or the ability to manipulate EM fields.
So Nirrti created the retrovirus|in an attempt to engineer her own host.
It seems inconceivable|anybody could do that.
It never worked.
|According to all the reports, the children went into the forest sick|and came out well.
If this was a transformation|or evolutionary process, at some point it was stopped.
By Nirrti.
Why would she do that? The retrovirus rewrites DNA.
If the carrier died before they passed on|the altered genes, no evolution.
- So the experiment was long term.
|- With each generation closer to a Hok'tar.
So how far along is Cassandra? What if maybe she really is|transforming into something else? - She thinks so.
|- Whatever she thinks, her fever is rising.
Admittedly more slowly, and she seems|to be able to handle it better, but I can't control it.
Let's find the answers.
Dismissed.
Cassandra? What are you doing? It helps, to do this.
How? It's almost like the heat is leaving|my body and going into the chess piece.
You haven't found a cure, have you? - No.
We're still trying.
|- It's all right.
No, it's not.
We may still learn something|from the biosamples SG-1 brought back.
They might help your body|produce antibodies.
I want this to happen, Janet.
- Don't say that.
|- It's going to happen anyway.
- You're ill.
|- You know that it's more than that now.
I can feel a power inside me.
It's only the beginning.
And your body is undergoing|an enormous physical strain.
- You think it's gonna kill me?|- I am worried about that possibility, yes.
- I don't care.
|- Well, you should.
- I know the limits of the human body.
|- Maybe I'm not human any more.
- OK.
f course you are.
|- Dying may be part of the transformation.
I don't care whether it is or not! - I'm sorry.
|- (sighs) Sweetheart, sometimes|when a person is sick, it's important for them to fight.
I want you to fight this.
OK.
K? That can't be right.
|The EM field is interfering.
No.
She'll be able to control that now.
I ran the test three times.
The results were|consistent, and it agrees with the EEG.
That's a 25 per cent higher|level of activity than normal.
- How can her body sustain that?|- She can channel the heat from her body.
Don't ask me how.
But I don't know how|long she's gonna be able to keep it up.
What I'd like her to do is sleep.
|She's been awake for 30 hours straight.
- I was about to go and see her.
|- Thank you.
Hey.
I hear you don't wanna sleep.
|You want some company? You wouldn't leave.
When the Goa'uld planted the bomb|inside me, you wouldn't leave.
Even though your orders were to|leave me there alone, you stayed with me.
- Yeah.
|- Why? I don't know.
Just an instinct.
- That I was gonna be OK.
K?|- Yeah, I think so.
But you didn't know for sure.
No.
Well that's how I feel about|what's happening to me now.
- Do you understand?|- Yeah, I think I do.
- Want me to stay with you for a while?|- It's not time yet.
Don't say that.
Well, when it is time, will you be here? I promise.
I think I can sleep now, for a little while.
OK.
K.
- Sam?|- I think she's asleep.
Good.
Listen.
The bodies of the villagers -|what happened to them? They were cremated.
|We sent a team back.
So there could be a bone fragment.
If we find one from someone who's been|through the initiation, antibodies may - That was four years ago.
The chances|- (alarm) OK.
h, no.
Cassandra? - It was a Goa'uld.
|- What? I was asleep.
I thought it was a nurse.
- But I did sense its presence.
|- I haven't sensed anything.
It was after you left.
At first no one was|there.
When it got closer, I saw someone.
This is a code three alert.
We need zats|and TERs in isolation room four - now.
- Are you all right?|- It ran away when I screamed.
- Major?|- It appears there's a Goa'uld on the base.
- What?|- How is that possible? Nirrti possesses the technology|to become invisible.
Cronus is dead.
If he was|the System Lord holding her prisoner So she's out.
The rings.
It was her.
|She came through the Stargate with us.
She was waiting for us|in her lab the whole time.
We may have inadvertently triggered|a device alerting her to our presence.
Go level by level.
Check everything.
|Keep in radio contact.
If you locate her, do not shoot to kill.
- Colonel?|- I'm stayin' here, sir.
I figure, you fought her off the first time,|I'm safer here with you.
She was here the whole time|you've been back.
- We'll find her.
|- No, she's right.
Why did she wait until now|to come after Cassandra? Level 22 is clear.
- (Teal'c) Level 21, clear.
|- Roger that.
- She wanted to check on her experiment.
|- We don't know what she wants.
No.
If the transformation were going to|kill me, she would've just let it happen.
- Don't you see?|- Honey, not now.
- No, but it did work.
|- Cassandra.
No.
Look out! Easy! We need her alive.
Security to iso room four.
|All search teams stand down.
Cassie? Cassie, don't do this.
Please get her outta here.
Come on, let's move! Roll her over.
Easy.
- What's gonna happen to Cassandra?|- (distorted) What is her condition? She just lost consciousness.
Then the end is very near.
If she dies so do you.
And what do you offer in return? I don't think you're|in any position to bargain.
I am in the position to save the life|of a child you hold dear.
- Release me.
|- We can't do that.
General With my invisibility device intact.
I also require a sample of her blood.
Absolutely not.
Those are my terms.
- She says she can help Cassandra.
|- If we trust her.
No, if we let her go.
Do you believe that she can actually help? Seeing as how we don't have a choice,|I guess it's worth a shot.
- What is General Hammond going to do?|- He hasn't decided yet.
I really need to get back|and see Cassandra.
We all know how tough this has been|for you, so if you need anything Thanks.
All right.
Give me|70 milligrams of dantrolene.
- Doctor?|- Now! - Mom?|- I'm here.
We're just giving you something else|to try and get your fever down.
It's happening.
OK.
K.
I want you to do what we talked|about, OK.
K? I want you to fight this.
- I don't wanna fight it.
|- You have to.
Honey, your body's not gonna be able to|survive what this retrovirus is trying to do.
- Where's Sam?|- She's gone to try to get Nirrti to help.
No.
Let it happen.
Let it happen! - (groans)|- Drop ten of Valium.
(nurse) Valium's in.
(DrFraiser cries out) Temperature's 106.
The dantrolene is not working? General, with all due respect, it's not|like we're negotiating with terrorists.
It's exactly that.
You're letting|your emotions get in the way.
- Yes, I am.
Shouldn't you be?|- Jack Until yesterday we didn't know|Nirrti was still alive.
Exactly.
Who cares if we let her go? What difference does it make?|It's just one more Goa'uld runnin' around.
If we were to allow Nirrti to leave|with a sample of Cassandra's blood, she could well create an advanced host|and become dangerously powerful.
- I agree with General Hammond.
|- What? The life of a child may be sacrificed, but Nirrti possesses valuable information|that would be lost if we let her leave.
General Hammond would like me|to check in on her.
Argh! - Teal'c, we're talking about Cassandra.
|- OK.
f that I am aware.
But her sacrifice would benefit|both of our peoples.
Nirrti has information|that could help us defeat the Goa'uld.
We'll find another way.
We may never have a Goa'uld|as our prisoner again.
Sir, you know what Cassandra has|gone through because of the Goa'uld.
If we're gonna put|what might happen over her life It's time to pack it in.
I agree.
(intercom) General Hammond|to the holding room.
- Dr Fraiser, stand down.
|- I can't do that, sir.
I don't have a choice.
Janet, don't do this.
I can't help Cassandra.
She can.
SG-1 has convinced me to make a deal|for Cassandra's life.
This isn't necessary.
Then you agree to my terms.
Just one.
OK.
nce you've cured Cassandra|of her illness, you'll be free to go.
- And how do I know you will honour this?|- You have only my word.
Not enough.
Then I should remind you that the woman|holding the gun is Cassandra's mother.
You have waited too long.
You try again.
- It is done.
|- (Carter) Vital signs returning to normal.
- Mom?|- It's OK.
K.
I'm here.
I have honoured my part.
Let's go to the gate.
We've never dialled these coordinates.
I|sort of hope you know what you're doin'.
It is not my final destination.
Without a sample of her blood,|I will have to begin my experiment again.
Aw, nuts.
At least you have honoured|this much of our bargain.
In your place, I doubt|I would have done the same.
I'll keep that thought alive.
Hey, Janet.
How's our patient? Bored.
The homework stacked up a bit,|but other than that she's just fine.
- I get to take her home tonight.
|- Ah Dominic awaits.
- Stop it.
|- Come on.
That last kiss was impressive.
- Stop it!|- Lights exploded overhead.
Stop it! - It's Saturday.
|- OK.
K.
But I won't be able to move the piece|around by thinking about it.
Sorry.
Good.
Then we're even.
Cassandra! I'm not imagining it.
|She was here, was she not? Almost the entire time|she was opening presents.
- Cassie!|- What? I thought you were wearing|the top that Sam bought you.
Oh.
Well, that's, like, for school.
- Hey.
Make a wish.
|- Yeah.
- Dominic's waiting.
|- Fine.
Invite him in.
I'm sure he'd love a piece of birthday cake|that Sam went to all the trouble to bake.
- Buy.
|- Bring.
- I'd love to meet him.
|- You said I could go.
Yeah, I did.
After.
We're meeting a bunch of people.
Considering you have not been feeling|well, you're lucky I'm letting you out at all.
Fine.
- You know, I could just|- No.
She is going to have a piece of birthday|cake.
You stay right where you are.
- Coffee?|- Yes, please.
They're not letting me leave yet, so if you|wanna go and meet up with everybody Wait a second.
Here.
Happy birthday.
- It's just like the ones from class.
|- Yeah, well, you said it was pretty, so This one's for decoration, though.
|I thought you could put it in your room.
- (Cassandra drops to ground)|- Cassandra? Help! - What happened?|- Nothing.
She just fell.
She has a temperature.
|What was she doing when she "fell"? - I kissed her.
|- Kissed her?! It's her birthday, all right? Look, the light|just exploded and she just passed out.
I wanna get her to the infirmary.
|Get the car keys.
Cass? Baby? Cassie? Cassie.
- How's she doing?|- Her fever still hasn't come down.
Sam, I need to get a sample of your blood.
Cassandra's blood work shows|the presence of a retrovirus.
- Didn't she just get over the flu?|- Whatever this is, it isn't the flu.
Is there a causal relationship|between the retrovirus and the EM field? Possibly.
What? Cassandra's body is generating|a low-level electromagnetic field.
It's been spiking.
That could be|why the light exploded on the porch.
And why I can't do an MRI to find out what|other effects this retrovirus is having.
- Mom?|- I'm here.
I couldn't finish the harvest.
That's OK.
I have to go into the forest.
It's OK, Cassie.
- Do I need to quarantine the base?|- I don't think it's contagious.
Major Carter and I show|no evidence of the retrovirus.
Then where did Cassandra contract it? - I'm guessing her home planet.
|- She has not been there in several years.
Retroviruses can exist in the body for|years before the first symptoms appear.
When it emerges, it starts to rewrite|the individual's DNA in order to replicate.
I've compared this with every retrovirus|on record.
It doesn't match any of them.
So there's obviously no vaccine.
I've been giving her antiviral|medications, but her tests show that the virus is spreading|into her cerebrospinal fluid.
At this moment, I'm more|concerned about brain damage.
I just finished going through|SG-7's reports from P8X-987.
- Morning.
|- Morning.
On Cassandra's planet, SG-7 witnessed|two incidents of fever and hallucination in teenagers Cassandra's age.
The villagers called it the "mind fire".
|I found some digital video footage.
Hurry! This way! She's overhere! - What happened?|- We werejust walking along Shejust dropped and started convulsing.
|What's wrong with her?.
- There's more, but you get the idea.
|- How did they treat it? SG-7 offered medicine, but they believed|the children were touched by gods - and interfering would tempt retribution.
|- What happened to 'em? They were sent alone to the forest nearby.
|After several days they came back, cured.
- How?|- SG-7 tried to find out, but the elders insisted the child|had to go alone as a religious rite.
Cassandra talked about|going into the forest.
- She was delirious.
|- Well, it's worth checking out, sir.
When we saw P8X-987, the atmosphere|was contaminated by the Goa'uld Nirrti.
Well, that was four years ago.
|The toxin could be nonpersistent.
But we can send a MALP to be sure.
Sir? It's worth a try.
(Daniel) Here's something.
It's a hand print.
A fire burned here.
Maybe we should collect|samples of local vegetation.
There might be|a natural cure around here.
Yeah.
Let's collect some of that flora.
Hello? Carter? Daniel? I believe we are in a Goa'uld laboratory.
- Whose, do you think?|- Nirrti.
Yeah.
It's OK.
It's just It's us.
- So where are we?|- I believe we're in the laboratory of Nirrti.
Sir, if this is where|the children ended up - You're right about that.
|- She didn't finish her sentence.
This place is what|the initiation rite was all about.
Hankan children with the mind fever|wander alone into the forest.
It gets dark.
They're drawn to the hand print|on the tree, then to the warm fire.
- Then the rings sweep them to this lab.
|- And then they come back cured.
- Nirrti cured 'em?|- Yeah.
It makes sense.
- No, it doesn't.
|- Indeed.
It seems a plausible explanation.
No.
She killed everyone|on this planet except Cassie.
Why would she cure a bunch of kids? If I'm reading this right,|it was part of some experiment.
Now, see, that sounds like a Goa'uld.
Nirrti was a prisoner of the System Lords.
Which means she's in no position|to help us, even if she would.
Oh, boy.
I did that.
Let's take it with us.
Cassie? - Cassandra, what are you doing?|- I have to go.
- You're not well.
|- I have to go to the forest.
- I need you to get back into bed, OK?|- You're not my mother.
Then what have I been to you|these past few years? - You don't understand.
|- Listen to me.
If nothing else, I am your doctor.
Let's go.
So what? I care about what happens to you.
Honey,|don't you know what you mean to me? - Don't you get it? It doesn't matter!|- It's all that matters.
- Please, let me try and help you.
|- You can't.
- If you wanna help me, then let me go!|- OK.
Just hear me out.
Let's get you back into bed,|and then we'll talk, OK? - SG-1 will be back soon.
Then|- No! Leave me alone! Cassie! No, no, no, no, no, no, no, no.
|Let me go, let me go, let me go.
- I can't do that!|- You're killing me! (alarm) - Major.
|- Colonel O'Neill wanted me to report.
Daniel and Teal'c wanted|more time to search the lab.
- Let's hope they find something.
|- Is she getting worse? You should see for yourself.
We had to move her in here.
- Is she still running a fever?|- It seems to have peaked.
But her blood work says otherwise.
There's no antibodies.
No indication her|body's fighting this.
Just more retrovirus.
- Does she know what's happening?|- She seems driven to go to the planet.
I don't know if that's instinctual|or a side effect of this retrovirus.
What are we gonna tell her? Hey.
How are you feeling? Any better? Why are you keeping me in here? We have to.
Your body is generating|something called an EM field.
You can see the effect|it's having on the monitors.
So this room is shielded|from the rest of the base.
If you let me go back to the planet,|then that won't happen any more.
- That's not true.
|- You don't know that.
You don't know anything.
You're just|keeping me here because you're afraid.
We found the place where the initiation|rite was supposed to happen.
Then let me go there.
We think the place you feel drawn to|led to a Goa'uld laboratory.
- One that belonged to Nirrti.
|- She killed everyone in my village.
- Yeah.
|- She also tried to use you to kill us.
We think she used your initiation ritual to|experiment on the children of your planet.
- Why?|- We don't know.
It's possible the retrovirus you're|carrying was part of her experiment.
What was the experiment? All we know so far|is that this retrovirus is changing the way your cells|generate electrical fields.
So your body's generating heat, and your|EEG shows your brain activity increasing.
You don't know why, do you? No.
- And now she's gone.
|- Yes, she is.
So you won't be able to stop it.
We didn't say that.
What's this for? What do you think it is for? - (Daniel) "Evolution"|- What? "of the Hok'tar Hok'tar"|Teal'c, what's Hok'tar? I have not heard that word in many years.
It refers to children|that underwent the initiation rite, so it obviously has something|to do with the children Hello? Sorry, guys.
|I think I may have just done that.
Do it again.
It's time to go.
Hey, kiddo.
- It's Saturday.
|- So? So, every other Saturday, at least|while I'm on Earth, we play chess.
And since I'm on Earth and it's Saturday I know what's happening to me.
Oh.
OK.
What? I'm changing into something.
And there's nothing you can do to stop it.
You know how me and your mom feel|when someone issues a challenge.
Dr Fraiser isn't my real mother.
She died when Nirrti poisoned my village.
I know that.
Janet knows that too.
- And please, don't call her Dr Fraiser.
|- Why? Because she loves you|and she deserves better.
- We all love you, for that matter.
|- That doesn't change anything.
You're wrong about that.
It's different now.
I'm different now.
I can do things.
- How did you do that?|- I just thought it.
I thought I wanted a knight|and it flew into my hand.
Jack calls 'em horses.
Yeah, well, that's Colonel O'Neill for you.
He always pretends|he's not as smart as he really is.
You know, if you take a close look,|they really are horses.
What do you see|when you look at me now? I see you.
Until your head starts spinning|around, and probably even then, I will still see you.
How can she do that? Magnets.
Magnets.
Each of those pieces|has a tiny magnet in the bottom to hold it on the board, like when|you're driving, so they don't rattle off.
Anyway, every one of those magnets|has a little electrical field around it.
That's how she was able|to manipulate 'em.
Magnets.
They do look like horses.
I have no idea how she was able|to do it physiologically, sir.
Actually, Teal'c filled me in|on something that might explain that.
"Hok'tar" is a hybrid|of two Goa'uld words.
"Hok", which means advanced, and|"tar", which I believe is a sort of slang.
- For?|- Human.
So, essentially,|it's "advanced human".
"Hok Tauri.
" Nirrti studied the children of Hanka because she believed|they were evolving into Hok'tar.
You're saying Cassandra is becoming|some form of advanced human.
And the retrovirus is the catalyst.
An advanced human would be|a powerful host for the Goa'uld.
Which explains why Nirrti|was experimenting.
Also why she exterminated|the population when we came.
She didn't want her experiment exposed.
Prior to our arrival on P8X-987,|and for as long as SG-7 was there, no villager showed advanced intelligence|or the ability to manipulate EM fields.
So Nirrti created the retrovirus|in an attempt to engineer her own host.
It seems inconceivable|anybody could do that.
It never worked.
|According to all the reports, the children went into the forest sick|and came out well.
If this was a transformation|or evolutionary process, at some point it was stopped.
By Nirrti.
Why would she do that? The retrovirus rewrites DNA.
If the carrier died before they passed on|the altered genes, no evolution.
- So the experiment was long term.
|- With each generation closer to a Hok'tar.
So how far along is Cassandra? What if maybe she really is|transforming into something else? - She thinks so.
|- Whatever she thinks, her fever is rising.
Admittedly more slowly, and she seems|to be able to handle it better, but I can't control it.
Let's find the answers.
Dismissed.
Cassandra? What are you doing? It helps, to do this.
How? It's almost like the heat is leaving|my body and going into the chess piece.
You haven't found a cure, have you? - No.
We're still trying.
|- It's all right.
No, it's not.
We may still learn something|from the biosamples SG-1 brought back.
They might help your body|produce antibodies.
I want this to happen, Janet.
- Don't say that.
|- It's going to happen anyway.
- You're ill.
|- You know that it's more than that now.
I can feel a power inside me.
It's only the beginning.
And your body is undergoing|an enormous physical strain.
- You think it's gonna kill me?|- I am worried about that possibility, yes.
- I don't care.
|- Well, you should.
- I know the limits of the human body.
|- Maybe I'm not human any more.
- Of course you are.
|- Dying may be part of the transformation.
I don't care whether it is or not! - I'm sorry.
|- (sighs) Sweetheart, sometimes|when a person is sick, it's important for them to fight.
I want you to fight this.
OK? That can't be right.
|The EM field is interfering.
No.
She'll be able to control that now.
I ran the test three times.
The results were|consistent, and it agrees with the EEG.
That's a 25 per cent higher|level of activity than normal.
- How can her body sustain that?|- She can channel the heat from her body.
Don't ask me how.
But I don't know how|long she's gonna be able to keep it up.
What I'd like her to do is sleep.
|She's been awake for 30 hours straight.
- I was about to go and see her.
|- Thank you.
Hey.
I hear you don't wanna sleep.
|You want some company? You wouldn't leave.
When the Goa'uld planted the bomb|inside me, you wouldn't leave.
Even though your orders were to|leave me there alone, you stayed with me.
- Yeah.
|- Why? I don't know.
Just an instinct.
- That I was gonna be OK?|- Yeah, I think so.
But you didn't know for sure.
No.
Well that's how I feel about|what's happening to me now.
- Do you understand?|- Yeah, I think I do.
- Want me to stay with you for a while?|- It's not time yet.
Don't say that.
Well, when it is time, will you be here? I promise.
I think I can sleep now, for a little while.
OK.
- Sam?|- I think she's asleep.
Good.
Listen.
The bodies of the villagers -|what happened to them? They were cremated.
|We sent a team back.
So there could be a bone fragment.
If we find one from someone who's been|through the initiation, antibodies may - That was four years ago.
The chances|- (alarm) Oh, no.
Cassandra? - It was a Goa'uld.
|- What? I was asleep.
I thought it was a nurse.
- But I did sense its presence.
|- I haven't sensed anything.
It was after you left.
At first no one was|there.
When it got closer, I saw someone.
This is a code three alert.
We need zats|and TERs in isolation room four - now.
- Are you all right?|- It ran away when I screamed.
- Major?|- It appears there's a Goa'uld on the base.
- What?|- How is that possible? Nirrti possesses the technology|to become invisible.
Cronus is dead.
If he was|the System Lord holding her prisoner So she's out.
The rings.
It was her.
|She came through the Stargate with us.
She was waiting for us|in her lab the whole time.
We may have inadvertently triggered|a device alerting her to our presence.
Go level by level.
Check everything.
|Keep in radio contact.
If you locate her, do not shoot to kill.
- Colonel?|- I'm stayin' here, sir.
I figure, you fought her off the first time,|I'm safer here with you.
She was here the whole time|you've been back.
- We'll find her.
|- No, she's right.
Why did she wait until now|to come after Cassandra? Level 22 is clear.
- (Teal'c) Level 21, clear.
|- Roger that.
- She wanted to check on her experiment.
|- We don't know what she wants.
No.
If the transformation were going to|kill me, she would've just let it happen.
- Don't you see?|- Honey, not now.
- No, but it did work.
|- Cassandra.
No.
Look out! Easy! We need her alive.
Security to iso room four.
|All search teams stand down.
Cassie? Cassie, don't do this.
Please get her outta here.
Come on, let's move! Roll her over.
Easy.
- What's gonna happen to Cassandra?|- (distorted) What is her condition? She just lost consciousness.
Then the end is very near.
If she dies so do you.
And what do you offer in return? I don't think you're|in any position to bargain.
I am in the position to save the life|of a child you hold dear.
- Release me.
|- We can't do that.
General With my invisibility device intact.
I also require a sample of her blood.
Absolutely not.
Those are my terms.
- She says she can help Cassandra.
|- If we trust her.
No, if we let her go.
Do you believe that she can actually help? Seeing as how we don't have a choice,|I guess it's worth a shot.
- What is General Hammond going to do?|- He hasn't decided yet.
I really need to get back|and see Cassandra.
We all know how tough this has been|for you, so if you need anything Thanks.
All right.
Give me|70 milligrams of dantrolene.
- Doctor?|- Now! - Mom?|- I'm here.
We're just giving you something else|to try and get your fever down.
It's happening.
OK.
I want you to do what we talked|about, OK? I want you to fight this.
- I don't wanna fight it.
|- You have to.
Honey, your body's not gonna be able to|survive what this retrovirus is trying to do.
- Where's Sam?|- She's gone to try to get Nirrti to help.
No.
Let it happen.
Let it happen! - (groans)|- Drop ten of Valium.
(nurse) Valium's in.
(DrFraiser cries out) Temperature's 106.
The dantrolene is not working? General, with all due respect, it's not|like we're negotiating with terrorists.
It's exactly that.
You're letting|your emotions get in the way.
- Yes, I am.
Shouldn't you be?|- Jack Until yesterday we didn't know|Nirrti was still alive.
Exactly.
Who cares if we let her go? What difference does it make?|It's just one more Goa'uld runnin' around.
If we were to allow Nirrti to leave|with a sample of Cassandra's blood, she could well create an advanced host|and become dangerously powerful.
- I agree with General Hammond.
|- What? The life of a child may be sacrificed, but Nirrti possesses valuable information|that would be lost if we let her leave.
General Hammond would like me|to check in on her.
Argh! - Teal'c, we're talking about Cassandra.
|- Of that I am aware.
But her sacrifice would benefit|both of our peoples.
Nirrti has information|that could help us defeat the Goa'uld.
We'll find another way.
We may never have a Goa'uld|as our prisoner again.
Sir, you know what Cassandra has|gone through because of the Goa'uld.
If we're gonna put|what might happen over her life It's time to pack it in.
I agree.
(intercom) General Hammond|to the holding room.
- Dr Fraiser, stand down.
|- I can't do that, sir.
I don't have a choice.
Janet, don't do this.
I can't help Cassandra.
She can.
SG-1 has convinced me to make a deal|for Cassandra's life.
This isn't necessary.
Then you agree to my terms.
Just one.
Once you've cured Cassandra|of her illness, you'll be free to go.
- And how do I know you will honour this?|- You have only my word.
Not enough.
Then I should remind you that the woman|holding the gun is Cassandra's mother.
You have waited too long.
You try again.
- It is done.
|- (Carter) Vital signs returning to normal.
- Mom?|- It's OK.
I'm here.
I have honoured my part.
Let's go to the gate.
We've never dialled these coordinates.
I|sort of hope you know what you're doin'.
It is not my final destination.
Without a sample of her blood,|I will have to begin my experiment again.
Aw, nuts.
At least you have honoured|this much of our bargain.
In your place, I doubt|I would have done the same.
I'll keep that thought alive.
Hey, Janet.
How's our patient? Bored.
The homework stacked up a bit,|but other than that she's just fine.
- I get to take her home tonight.
|- Ah Dominic awaits.
- Stop it.
|- Come on.
That last kiss was impressive.
- Stop it!|- Lights exploded overhead.
Stop it! - It's Saturday.
|- OK.
But I won't be able to move the piece|around by thinking about it.
Sorry.
Good.
Then we're even.