INT. CARL'S BASEMENT - EVENING
Vera and Carl are as before: Carl sitting tied to a metal stool, Vera sitting on a chair in front of him.
VERA
Okay, let's say I believe you. Either you're truthsome, or a really good liar. If it wasn't you, who was it?
Vera moves behind Carl and takes out her Leatherman, and cuts Carl's bindings. Carl gets up and stretches, then sits back down, clearly more relaxed.
CARL
They used your account, and that gives us a clue. Only five people have access to that box at all, and two of them are in Europe.
VERA
Are you saying Alan did it? That's crazy.
CARL
It's logical.
VERA
But why would he do it? He's the most patriotic man I know. There's no way he'd set up a terrorist attack.
CARL
I don't know why, but there's no alternative. When you have eliminated the impossible, whatever remains, however improbable, must be the truth.
VERA
There's no point in accusing him without proof.
CARL
Yes, that's correct. It would be wrong to do so.
Vera gives Carl with a weird, disbelieving look, then shakes her head.
VERA
We're going to have to figure out exactly what happened. We need the malicious code that was injected into the boxes and the only place to get that is at the office.
CARL
What do you mean?
VERA
We're going to have to break in and steal it.
CARL
But... that's against the rules.
VERA
Some day, you're going to tell me how you became such a stickler for following every rule, but today, you're going to break a few.