When a reformed jewel thief is suspected of returning to his former occupation, he must ferret out the real thief in order to prove his innocence.

[last lines]
Frances Stevens: So this is where you live? Oh, Mother will love it up here!
Frances Stevens: You want a leg or a breast?
John Robie: You make the choice.
John Robie: Danielle, you are just a girl. She is a woman.
Danielle Foussard: Why buy an old car if you can get a new one cheaper? It will run better and last longer.
John Robie: You're here in Europe to buy a husband.
Frances Stevens: The man I want doesn't have a price.
John Robie: That eliminates me.
Frances Stevens: I have a feeling that tonight you're going to see one of the Riviera's most fascinating sights.
[pause]
Frances Stevens: I was talking about the fireworks!
John Robie: I never doubted it.
Frances Stevens: The way you looked at my necklace, I didn't know...
Frances Stevens: Even in this light, I can tell where your eyes are looking.
[fireworks]
Frances Stevens: Look, John. Hold them. Diamonds... The only thing in the world you can't resist. Then tell me you don't know what I'm talking about.
[fireworks]
Frances Stevens: Ever had a better offer in your whole life? One with everything?
[fireworks]
John Robie: I've never had a crazier one.
Frances Stevens: Just as long as you're satisfied!
[fireworks]
John Robie: You know as well as I do: this necklace is imitation.
Frances Stevens: Well, I'm not.
John Robie: Say something nice to her, Danielle.
Danielle Foussard: She looks a lot older up close.
[John Robie whimpers]
Frances Stevens: To a mere child, anything over twenty might seem old.
Danielle Foussard: A child? Shall we stand in shallower water and discuss that?
Frances Stevens: Are you sure you were talking about water skis? From where I sat it looked as though you were conjugating some irregular verbs.
John Robie: For what it's worth, I never stole from anybody who would go hungry.
Frances Stevens: I called the police from your room and told them who you are and everything you've been doing tonight.
John Robie: Everything? The boys must have really enjoyed *that* at headquarters!
John Robie: Miss Stevens?
Frances Stevens: Yes, Mr. Burns?
John Robie: You know what I think?
Frances Stevens: About what?
John Robie: You.
Frances Stevens: I don't really care.
H. H. Hughson: How many did you kill?
John Robie: 72. But, I know something that'll please you: none of them were insured.
Frances Stevens: Doesn't it make you nervous to be in the same room with thousands of dollars worth of diamonds, and unable to touch them?
John Robie: No.
Frances Stevens: Like an alcoholic outside of a bar on Election Day?
John Robie: Wouldn't know the feeling.
Frances Stevens: The cat has a new kitten.
Frances Stevens: You're leaving fingerprints on my arm.
John Robie: [In reference to a beautiful villa they are visiting] Why don't you own a place like this?
Frances Stevens: Palaces are for royalty. We're just common people with a bank account.
Frances Stevens: Mother, the book you're reading is upside down!
H. H. Hughson: You are a man of obvious good taste in everything. Why did you...
John Robie: Why did I take up stealing? To live better, to own things I couldn't afford, to acquire this good taste that you now enjoy and which I should be very reluctant to give up.
H. H. Hughson: Then you are frankly dishonest.
John Robie: I try to be.
John Robie: I only regret one thing.
Danielle Foussard: That you never asked me to marry you?
John Robie: No, that I never taught you better English.
Frances Stevens: I've never caught a jewel thief before. It's stimulating. It's like... It's like...
John Robie: Like sitting in a hot tub?
John Robie: May I ask you a personal question?
Frances Stevens: I've been hoping you would.
Frances Stevens: What do you say?
John Robie: My only comment would be highly censorable.
Frances Stevens: My nerves could stand a drink.
Jessie Stevens: Your nerves and your mother!
Frances Stevens: John, why bother?
John Robie: It's sort of a hobby of mine - the truth.
Frances Stevens: I bet you told her all your trees are sequoias.
Jessie Stevens: Sorry I ever sent her to finishing school. I think they finished her there.
Jessie Stevens: [referring to John] Handsome. I wouldn't mind buying *that* for you.
John Robie: You don't have to spend every day of your life proving your honesty, but I do.
John Robie: Danielle, do me a favor. Don't call me a cat.
Danielle Foussard: I only do one favor a day.
Foussard: [he says something angrily to Danielle in French]
John Robie: Will you do as your father here asks?
Danielle Foussard: [mockingly] Did I brush your fur the wrong way?
John Robie: [to Frances] Not only did I enjoy that kiss last night, I was awed by its efficiency.
Jessie Stevens: Why do you think we moved so often? Your father was a swindler, dear, but a lovable one. If you ask me, this one's a bigger operator on every level.
John Robie: Thank you, madam.
John Robie: Well, we only met a couple of minutes ago.
Danielle Foussard: That's right, only a few minutes ago.
Frances Stevens: Only a few minutes ago? And you talk like old friends...
Frances Stevens: Ah, well, that's warm, friendly France for you.
H. H. Hughson: The pastries are light as air.
John Robie: Germaine has very sensitive hands and an exceedingly light touch. She strangled a German general - without a sound.
Frances Stevens: I'm in love with you.
John Robie: Now that's a ridiculous thing to say.
Jessie Stevens: I know you ought to be spanked with a hairbrush and sent back to school - public school - where they could pound some sense into you during recess.
Frances Stevens: Maybe Mr. Houston doesn't care for gambling.
Jessie Stevens: Everyone likes to gamble in one way or another, even you!
Frances Stevens: I have an intense dislike for it.
Jessie Stevens: Francie, dear, when the stakes are right, you'll gamble!
Danielle Foussard: I heard some talk in the kitchen. They say, "What a pity if they must kill The Cat!"