MULDER: So far, nobody's been able to reach to reach the compound because of bad weather. Obviously, they either think we're either brilliant or expendable because we've pulled the assignment.

HODGE: Can I see some identification?

MULDER: What for?

HODGE: I just want to make sure we are who we say we are. That's me.

MURPHY: That's you. It's me.

HODGE: It's you.

MULDER: It's me!

BEAR: You folks the ones going up to Icy Cape?

MULDER: Yeah.

BEAR: Then I'm the one flying you. My name's Bear. The plane's across the way, provisions are loaded. Grab your gear.

HODGE: Oh, could we see some credentials?

BEAR: Credentials. The only credentials that I have is that I'm the only pilot willing to fly you up there. You don't like those credentials... walk.

MURPHY: Alright, this is the Icy Cape area. It approximates the depth of the ice sheet to be about 3,000 meters thick.

MULDER: I also found this data and if I'm reading it correctly, the team actually found the ice sheet to be twice that depth.

MURPHY: That's very good. The numbers indicate the topography to be concave. Looks like they were drilling inside a meteor crater.

MURPHY: Maybe the organism in the ice core somehow got into the men.

DASILVA: Come on, nothing can survive in sub-zero temperatures for a quarter of a million years.

MULDER: Unless that's how it lives.

MULDER: This is Agent Mulder, we have a serious biological hazard. Request air pick-up and quarantine procedures, over. Come in, Doolittle Airfield.

RADIO: We copy, Agent Mulder. This area is under a heavy storm and no aircraft can get out for the next day. Maybe the military base in Kotzebue can set up a quarantine. Advise immediate evacuation, the arctic storm is bearing in your direction, over.

MULDER: We were told we would have three clear days of weather, over.

RADIO: Welcome to the top of the world, Agent Mulder. Over.

MURPHY: Hypothalmus... what was that again?

SCULLY: It's a gland that secretes hormones although I don't know why a parasite would want to attach to it.

HODGE: Hypothalmus releases acetlycholine, which produces violent, aggresive behavior. That might be a connection. Everybody that's been infected certainly seems to act aggresively. Maybe the worm feeds on the acetlycholine which floods our capacity to control violent behavior.

SCULLY: Well, a parasite shouldn't want to kill it's host.

HODGE: It doesn't kill you until it's extracted. Then it releases a poison.

MULDER: We're all wired and hypersensitive, it'll be good to get a fresh start in the morning.

SCULLY: Mulder, I don't want to waste a second trying to find a way to kill this thing.

MULDER: I don't know if we should kill it. This area of the ice sheet was formed over a meteor crater. The worm lived in ammonia. It survived sub-zero temperatures. Theorists in alternative life-designs believe in ammonia-supported life systems on planets with freezing temperatures.

SCULLY: No.

MULDER: The meteor that crashed here a quarter of a million years ago may have carried that type of life to earth.

SCULLY: Mulder, if we don't kill it now, we run the risk of becoming Richter and Campbell with guns to our heads.

MULDER: But if we do kill it now, we may never know how to stop it or anything like it in the future.

MULDER: Scully, get that gun off me!

SCULLY: Mulder, you have to understand!

MULDER: Put it down!

SCULLY: You put it down first!

MULDER: Scully! For God sakes, it's me!

SCULLY: Mulder... you may not be who you are.

SCULLY: Come take a look at this. The larvae from two different worms killed each other. An individual worm will not tolerate another invading it's host. It does to the invader what it did to humans. It makes them kill.

HODGE: It doesn't make sense for a species to kill its own, it needs another to procreate.

DASILVA: Worms are hermaphroditic. It can reproduce itself.

MULDER: It's still there, Scully. 200,000 years down in the ice.

SCULLY: Leave it there.