- Catherine Gale: I'm a widow.
- Dr. James Kearns: Oh, I am sorry.
- Catherine Gale: My husband was killed some years ago on our farm in Africa.
- Dr. Clemens: Now tell me, what is your interest in computers, and Plato in particular?
- Catherine Gale: Plato?
- Dr. Clemens: Well, that is what we call him.
- Catherine Gale: Oh, the computers in this building?
- Dr. Clemens: Plato is this building, Mrs. Gale. The whole building.
- Dr. Clemens: Have you ever tried to run a secure establishment, Dr. Hurst? It's like fighting a boa constrictor.
- Catherine Gale: There's a Dr. Hurst, a bit of a military man. He's in a panic. Wants MI5, the navy, anybody.
- John Steed: You, he can have. Not me, I'm off to the Middle-East, tonight.
- Catherine Gale: You're staying right out of it?
- John Steed: Yeah, you go ahead, Mata Hari, you just, eh, send me a postcard, hm?
- Dr. James Kearns: Well, will you play or will you watch?
- Catherine Gale: I'll watch.
- Dr. James Kearns: Fine, I'm worth watching.
- Dr. James Kearns: Right, here we go for the kill.
- Catherine Gale: Cocky, aren't you?
- Dr. James Kearns: [chuckles] I love you too, just watch.
- Dr. James Kearns: [having been knocked to the ground by Cathy] Ah, that was dead stupid of me, wasn't it? If I had known I was dealing with an expert, I'd have clunked you with a spanner!
- Catherine Gale: What are you doing here?
- Dr. James Kearns: [gets up] Well, I just came to see if old man Clemens had found out anything before they killed him.
- Catherine Gale: How'd you get in?
- Dr. James Kearns: Ah, well you see, that was dead clever of me: I never left.