t know who to trust.
l know what you mean, Blair.
Trust is a tough thing
to come by these days.
Tell you what ? Why don't you just
trust in the Lord ?
Watch Clark.
What ?
l said, ''Watch Clark. ''
And watch him close,
do you hear me ?
Now the radio's gone.
- So are the choppers.
- We're completely cut off.
All we can do now is hole up 'til
spring and wait for the rescue team.
No, we don't wait. Somebody in
this camp ain't what he appears.
Right now that may be one or two of us.
By spring it could be all of us.
So how do we know
who's human ?
lf l was an imitation--
a perfect imitation--
how would you know
if it was really me ?
ls there some kind
of test, Doc ?
Well, yeah... possibly.
- l've been thinking about a blood serum test.
- What's that ?
We could take a sample
of each person's blood.
We could mix it
with uncontaminated blood.
l suppose if there's a reaction,
we'd know who isn't human.
We've got whole blood
in storage.
Here, start working on it.
Keep an eye on Clark.
He was close to that dog.
Yeah. Yeah.
Mac, we need Blair's help.
He's the only one...
- who knows what this organism is capable of.
- He's too far gone, Fuchs.
But get the rest of his notebooks
and start going through them.
Garry! Hey, you guys, come here !
What ?
- Somebody got to the blood!
- What ?
- Where's Clark ?
- Right here.
Wait a minute, wait a minute.
Was this broken into ?
No, the lock is undamaged.
- Somebody opened it, closed it, then locked it.
- Great.
Who's got access to it ?
l guess l'm the only one.
And l got the only key.
Would that test
have worked, Doc ?
- Oh, l think so, yes.
- Somebody else sure as hell thought so.
Well, who else could
have used that key ?
Nobody! l just give it
to Copper whenever he needs it!
- Could anybody have gotten it from you, Doc ?
- l don't see how.
As soon as l'm finished,
l return it right away.
Great.
- When was the last time you used it ?
- A day or so ago.
l suppose somebody could
have lifted it off me--
Oh, come on ! That key ring
is always hooked to your belt.
Accusing everybody--
Stop it now! lt ain't worth it!
- Copper's the only one who's got any business with it.
- Wait a minute !
- You've been in here on several occasions !
- Doc thought of the test.
- That clears him ? Bullshit!
- Why would he take--
- Shut up, man !
- Windows ! - Windows !
Put that down.
- No.
- l'll put this right through your head.
You guys gonna listen to Garry,
let him give the orders ?
He could be
one of those things !
Windows, wait a minute.
Just take it easy.
Put the gun down.
Put it down.
- Garry, you don't want to hurt anybody.
- Get back.
On the floor.
lt's on the floor.
l don't know about Copper,
but l give you my word,
l did not go near that blood.
But l guess you'll all
feel a little easier...
Norris, l can't see
anybody objecting to you.
l'm sorry, fellas,
but l-l-l'm not up to it.
- l'll take it.
- Like hell you will.
lt should be somebody a little
more even-tempered, Childs.
All right.
l know l'm human.
And if you were all these things,
then you'd just attack me right now.
So some of you
are still human.
This thing doesn't want
to show itself.
lt wants to hide
inside an imitation.
lt'll fight if it has to,
but it's vulnerable out in the open.
lf it takes us over,
then it has no more enemies,
nobody left to kill it.
And then it's won.
There's a storm
hitting us in six hours.
We're gonna find out
who's who.
All right, Doc, Garry and Clark move
over there away from the others.
Norris, you and Childs shoot 'em up with
morphine. Tie 'em down and watch 'em.
-Fuchs, you start workin'on a new test.
-l need Doc's help.
Yeah, you don't want
to drug me.
Mac, l'm not a prisoner!
Here, let me do it. You're gonna
break the needle in my arm.
No, Doc. He's doin'a real fine job.
l'm gonna hide this tape
when l'm finished.
lf none of us make it, at least
there'll be some kind