- Gerry Standing: [about Steve's moodiness] I'll find out what's wrong with him.
- DCI Sasha Miller: No, no, no. You're nobody's idea of the Peace Corps; let him sort it out himself.
- Gerry Standing: Chess is all about an inner eye for geometric relationships. Plus, of course, a capacity for deductive logic.
- Steve McAndrew: Why are we wasting our time on this again?
- Gerry Standing: Look. If A implies B and B implies C, then A implies C. D'you understand?
- Steve McAndrew: I do. If you keep talking bollocks and I keep listening to your bollocks, then you'll keep talking bollocks.
- [Gerry is getting obsessed with chess, after investigating a murder victim who was a keen chess-player]
- Gerry Standing: It gets under your skin. When I finally *did* close my eyes last night, all I could see were bishops and rooks.
- Steve McAndrew: Makes a change from tarts and vicars, eh?
- Gerry Standing: [about Steve] He's been like this for days. Doesn't bring anything to the party, and then pisses on everybody's chips.
- [last lines]
- Danny Griffin: [about chess] Did you know there are three hundred and eighteen *billion* possible positions after our first four moves each?
- Gerry Standing: Don't try and blind me with science. It's a simple game.
- Danny Griffin: And that the number of distinct forty-move games is greater than the number of electrons in the observable universe.
- Gerry Standing: Just make *one* move, will you!
- Danny Griffin: Yes, of course, right.
- [moves his queen]
- Danny Griffin: Checkmate.
- Zoe Baines: [about interpreting] Diplomatic conferences are the worst. When someone says 'With all due respect', an Englishman knows he's about to be rude, but it's quite difficult to put into translation.
- Steve McAndrew: Think of us as a new pair of eyes.
- Viktor Proust: If facts are same, only people analysing are different. You are better than first police?
- Gerry Standing: Spot on. We are the super-sleuths of Scotland Yard.
- Viktor Proust: I don't think so.
- DAC Robert Strickland: [to Sasha] I think you should look everywhere else before cracking your numbskull against the unbreakable wall that is diplomatic immunity.