- Henrietta Savernake: What happens if you meet a criminal who is cleverer than you are yourself?
- Hercule Poirot: This is not the highest probability, mademoiselle.
- Inspector Grange: You were an eyewitness. You saw everything.
- Hercule Poirot: Mais, I saw... but... the eyes of eyewitnesses are so unreliable. Sometimes the eyes they see what they are meant to see.
- Henrietta Savernake: Aren't you an artist too, Mr. Poirot?
- Hercule Poirot: On the whole, I would say... no. Oh, I have known crimes that were artistic; ingenious exercises of the imagination; but the solving of them, no. No, the creative power is not what is needed. What is required is a passion for the truth.
- John Christow: Would you give it all up, if I asked you to, and come and live with me?
- Henrietta Savernake: No.
- John Christow: No?
- Henrietta Savernake: That's not really what you want.
- John Christow: Couldn't you lie to me just once?
- Henrietta Savernake: Why?
- John Christow: Because I love you, Henrietta, but you're so... you're so detached. Your art, your cars, your friends... I want you to think only of me.
- Henrietta Savernake: Isn't that what Gerda does?
- John Christow: Don't tell me you care a damn about Gerda!
- Henrietta Savernake: Why not? I like Gerda.
- Gerda Christow: I'm not good at anything. I don't know why you ever married me.
- John Christow: You needed taking care of. That's why I married you.
- Lady Angkatell: I just don't know what to do about lunch. It seems so heartless to be sitting around a table stuffing oneself as if nothing had happened.
- Edward Angkatell: Don't worry on my account, Lucy.
- Lady Angkatell: [laughs] Bless you, dear Edward. Say what you will, murder is a very awkward thing. It upsets the servants so, puts the whole routine out, and, worst of all, it was duck for lunch, my very very favorite.
- Veronica Cray: Are you saying you don't love me?
- John Christow: You are a very, very alluring woman, Veronica, but I don't "love you," no.
- Veronica Cray: I came all this way to find you; waiting in this ghastly hovel for the weekend you'd appear. You see, I knew if we could be just once more together... just one more...
- John Christow: You? You planned it?
- Veronica Cray: Oh, you belong to me, John. You're mine.
- John Christow: When I was a young man, I WANTED you to share my life and you wouldn't do it!
- Veronica Cray: Because MY career was so much more important than yours. I mean, anyone can be a "doctor"!
- John Christow: You're a nasty piece of work...
- [begins to walk away]
- Veronica Cray: You leave me again and I really will make you sorry!
- John Christow: So be it.
- [long pause]
- John Christow: Goodbye.
- [walks out]
- Veronica Cray: I hate you more than I thought I could hate anyone!
- [throws whisky glass after him]
- Henrietta Savernake: I wish I wasn't so dreadfully fond of you, Edward. It makes it so much harder to go on saying no.
- Edward Angkatell: What you really mean is that you won't marry me becasue of John Christow. Why doesn't the fellow get a divorce?
- Henrietta Savernake: Because!
- Edward Angkatell: That's it, isn't it? If there were no John Christow in the world, you'd marry me...
- Henrietta Savernake: I'm not, Mr. Poirot, terribly truthful.
- Hercule Poirot: No, but I think you have integrity.
- Hercule Poirot: It's a hard thing to kill the one you love, n'est pas?
- Gerda Christow: A very hard thing, I should imagine. I couldn't DO it.
- Hercule Poirot: Uh, Victor. Victor, what is that smell?
- Victor Simms: Smell? Can 't smell nothing, sir, just good country air.
- John Christow: Why are you slowing?
- Gerda Christow: It might be about to turn red.
- John Christow: But it isn't, is it? It's green.
- Gerda Christow: Oh, sorry! I... I've just become concerned it's suddenly going to...
- Lady Angkatell: I'm not terribly interested in who killed who. I mean, once you're dead, you're dead. It doesn't matter why, does it?
- John Christow: Couldn't you lie to me just once?
- Henrietta Savernake: Why?
- John Christow: Because I love you, Henrietta.