Christopher Foyle: [Sam is driving Foyle and Milner to a farm] You're unusually quiet?...
Samantha Stewart: Yes, sir...
Christopher Foyle: Does that mean you're thinking?
Samantha Stewart: Yes...
Christopher Foyle: Need any help?
Samantha Stewart: No, thank you... I just have to make up my mind about something, and it's rather akward. I feel as though I've come to a crossroads, and I'm afraid of making a wrong turn .
Christopher Foyle: Well, you just have, you should have gone that way, Hythe is left.
Samantha Stewart: Oh... Sorry...
Christopher Foyle: You have a commanding officer here, name of Halliday. I'd like to speak to him.
Armed Guard: I'm afraid that's not possible, sir.
Christopher Foyle: Well, there's been an outbreak of anthrax here in Hastings and he's responsible for it. If I'm not in his office within the next two minutes, I'll be back with the army, the police, the home guard and the press. Would you feel able to convey this to him at your earliest opportunity?
DCS David Fielding: How long ago was it when I met you?... How old were we?... 21? 22? Young soldiers off to the war... It was a different world then. Of course we... we didn't know what we were going to go through.
Christopher Foyle: Well, we got through it.
DCS David Fielding: You may have, not me. I never told you. April 1915, Ypres. I was there with a bunch of Canadians. It was just a day like any other, which is to say, pretty... hellish, at the best of times. And then I saw it coming towards us. A cloud. Green. Almost... luminescent. It was completely silent. Moving as if it had a life of it's own. We didn't run. Nobody even moved. We'd no idea what it was. And then the pain. There were people screaming, coughing blood, tearing at their own faces, blind. Nobody knew what was happening. I mean, how could we? You see, that was the first time. The Boche released a hundred and seventy tons of chlorine gas. Do you know what the operation was called? Disinfection. Well, they disinfected us, all right. I was one of the lucky ones. I still feel it inside now, still burning inside me.
Christopher Foyle: Well, we won. We came through.
DCS David Fielding: Did we? Look around you, Christopher. There's so much evil, so much bad blood. Humanity stinks!
Mark Wilcox: Simon?
Simon Higgins: Good morning, Mark.
Mark Wilcox: How are you?
Simon Higgins: Just missed the quack. No change I'm afraid.
Mark Wilcox: But you are going to be all right?
Simon Higgins: Apart from being blind, you mean?
Mark Wilcox: You shouldn't have done it.
Simon Higgins: Oh, it's only temporary, Mark; I'll be fine. What about the new test?
Mark Wilcox: We're going ahead now.
Simon Higgins: Halliday in charge?
Mark Wilcox: Yes.
Simon Higgins: He's got no bloody idea of what he's doing. Do be careful, won't you?
Mark Wilcox: You're a fine one to speak.
Simon Higgins: Just keep an eye on him.