- Miss Jane Marple: [cameo - while walking past Poirot into the police station] The solution is ABC, to anyone with half a brain cell.
- Hastings: I thought you'd given up smoking?
- Hercule Poirot: This is a celebration.
- [lights his cigarette]
- Hastings: Oh, really? What are you celebrating?
- Hercule Poirot: I'm celebrating my first cigarette in 51 days.
- Hercule Poirot: You have disgraced yourself!
- Hastings: How so, pray?
- Hercule Poirot: One does not expect an Englishmen to be an assassin.
- Amanda Beatrice Cross: There's going to be a murder. I'm frightened! That's why I'm here. I'm terribly frightened!
- Hercule Poirot: Oh, you think someone is going to kill you, eh?
- Amanda Beatrice Cross: No, I'm going to kill someone.
- Hercule Poirot: No more massage, please.
- Don Fortune: There's no point in asking her about women. All she knows about is men - especially the size of their wallets.
- Hastings: Where have you been? What have you been doing?
- Hercule Poirot: Arranging a little extra insurance my friend.
- Hastings: Oh really? Personally I always feel perfectly safe with British railways. Mind you its very different in France, isn't it?
- Hercule Poirot: I wouldn't know. I am not French, I am Belgian.
- Hastings: Well it's the same thing, you both eat horsemeat.
- Hastings: Her Majesty's government seems to think that you're a very important person and, as such, are entitled to protection. I understand you're not very popular with the criminal classes.
- Hercule Poirot: No.
- Hastings: It would be the most almighty top-level fuss, you know, if you were stabbed, shot or blown up, or did suffer any inconvenience while on British soil.
- Hercule Poirot: Yes. Yes, I suppose it would, actually. Well, in that case, I suppose you must join me in a massage, my faithful bulldog.
- Japp: I'd like to apologize for this misunderstanding, sir. I thought the name was Pairot, of course, if I had realized it was Perot.
- Hercule Poirot: Poirot.
- Franklin: My step brother lives in a square world of his own, Mr. Poirot. For instance, he still thinks I'm too young to drink.
- Hercule Poirot: Most people are.
- 'X': A pity the way things turned out, from your point of view, I mean. Well, of course, it was an open and shut case all along. Curious you couldn't see that. I feel you Continental chaps are just a little bit too fanciful for your own good.
- Duncan Doncaster: I suppose your business is blackmail.
- Hercule Poirot: My business is justice. I'm Poirot.
- Duncan Doncaster: She was an experiment.
- Hercule Poirot: An experiment?
- Duncan Doncaster: A near perfect specimen of the primitive aggressive female acquisitive personality. In lay language, a gold digger.
- Hercule Poirot: Who is ABC?
- Duncan Doncaster: ABC?
- Hercule Poirot: Blonde. Beautiful. Very tall.
- Duncan Doncaster: You speak of Amanda, of course.
- Hercule Poirot: Amanda? Amanda who?
- Duncan Doncaster: Amanda Beatrice Cross.
- Hercule Poirot: A-B-C!
- Hercule Poirot: I trust you'll allow me to accept defeat with dignity. I don't relish this - this bum's rush.