Strangers on a Train (1951)
Ruth Roman: Anne Morton
Anne Morton : How did you get him to do it?
Guy Haines : I... get him to do it?
Anne Morton : Bruno Anthony. He killed Miriam, didn't he?
[Guy stares at Anne, hesitating to answer]
Anne Morton : Tell me the truth. Didn't he?
Guy Haines : Yes. He's a maniac. I met him a few weeks ago on the train going to Metcalf. Over some small talk, he had some crazy scheme about exchanging murders. I'd do his murder; he'd do mine.
Anne Morton : What do you mean "your murder" Guy?
Guy Haines : Bruno read about me in the newspapers. He knew all about Miriam, and about you. He suggested that if he got rid of Miriam for me, I should kill his father.
Anne Morton : But you must have known he was only talking nonsense.
Guy Haines : But he wasn't! He really wasn't joking about swapping murders! Of course I didn't give it another thought. And now a lunatic wants me to kill his father.
Anne Morton : It's too fantastic.
Guy Haines : Yes, isn't it?
Anne Morton : You mean, you've known about Miriam all this time?
Guy Haines : Since the first night. He gave me her glasses and told me what he did.
Anne Morton : Why didn't you call the police? Why didn't you turn Bruno in right away?
Guy Haines : And have them say to me what you just said? "Mr. Haines, how did you get him to do it? Confess, Mr. Haines! How did you get Bruno Anthony to murder your wife?" Bruno would tell them that we planned it together.