Allen Leech credited as playing...
John Cairncross
- John Cairncross: The boys, we're going to get some lunch.
- [No response]
- John Cairncross: Alan?
- Alan Turing: Yes?
- John Cairncross: I said we're going to get some lunch.
- [No response]
- John Cairncross: Alan?
- Alan Turing: Yes?
- John Cairncross: Can you hear me?
- Alan Turing: Yes.
- John Cairncross: I said we're off to get some lu-...
- [disrupts himself]
- John Cairncross: This is starting to get a little bit repetitive.
- Alan Turing: What is?
- John Cairncross: I had asked if you wanted to come to lunch with us.
- Alan Turing: No you didn't, you said you were going to get some lunch.
- John Cairncross: Have I offended you in some way?
- Alan Turing: Why would you think that?
- John Cairncross: Would you like to come to lunch with us?
- Alan Turing: What time's lunch time?
- Hugh Alexander: [Frustrated] Christ, Alan, it's a bleeding sandwich.
- Alan Turing: What is?
- Hugh Alexander: Lunch.
- Alan Turing: Oh. I don't like sandwiches.
- John Cairncross: Never mind.
- John Cairncross: What's wrong?
- Alan Turing: What if... what if I don't fancy being with Joan in that way?
- John Cairncross: Because you're a homosexual? I suspected.
- Alan Turing: Sh- should I tell her that I've had affairs with men?
- John Cairncross: You know, in my admittedly limited experience, women tend to be a bit touchy about accidentally marrying homosexuals. Perhaps not spreading this information about might be in your best interest.
- Alan Turing: I care for her, I truly do, but... I-I just don't know if I can pretend...
- John Cairncross: You can't tell anyone, Alan. It's illegal. And Denniston is looking for any excuse he can to put you away.
- Alan Turing: I know.
- John Cairncross: This has to stay a secret.
- Alan Turing: You know why people like violence, Hugh? It's because it feels good. Sometimes we can't do what feels good; we have to do what is logical.
- John Cairncross: What's logical?
- Alan Turing: Hardest time to lie to someone is when they're expecting to be lied to.
- Joan Clarke: [Realizing] Oh, God.
- John Cairncross: What?
- Alan Turing: If someone's waiting for a lie, you can't just, uh, give them one.
- Joan Clarke: Damn it, Alan's right.
- Peter Hilton: What?
- Alan Turing: What would the Germans think if we destroy their U-Boats?
- Peter Hilton: Nothing, they'll be dead.
- John Cairncross: [Realizing] No... no, you can't be right.
- Alan Turing: So our convoy suddenly veers off course; a squadron of our air bombers miraculously descends on the coordinates of the U-Boats; what will the Germans *think*?
- Hugh Alexander: [Realizing] The Germans will know that we have broken Enigma.
- Joan Clarke: They'll stop all radio communications by midday, and they would change the design of Enigma by the weekend.
- Alan Turing: Yes. Two years work, everything that we've done here, will all be for nothing.
- John Cairncross: There are 500 civilians in that convoy. Women. Children. We're about to let them die.
- Alan Turing: Our job is not to save one passenger convoy; it is to win the war.
- Hugh Alexander: Our job was to crack Enigma.
- Alan Turing: Well, we've done that. Now for the hard part - keeping it a secret.