Jeff: What about the knife and saw I saw him wrapping up in newspaper?
Lt. Doyle: Do you own a saw?
Jeff: Well... yeah. At home in my garage, I keep...
Lt. Doyle: How many people did you cut up with it?

Jeff: What do you need as evidence? Bloody footprints leading up to his door?
Lt. Doyle: One thing I don't need is heckling. You called me and asked for help. Now you're behaving like a taxpayer.
Jeff: You know by tomorrow morning, there may not be any evidence left in that apartment, you know that?
Lt. Doyle: A detective's worst nightmare.

Lt. Doyle: Jeff, you've got a lot to learn about homicide. Why, morons have committed murders so shrewdly that it's taken a hundred trained police minds to catch them.

Lt. Doyle: Lars Thorwald... is no more a murderer than I am.
Jeff: [stunned] You mean that you can explain everything strange that has been going on over there, and is still going on?
Lt. Doyle: No, and neither can you. That's a secret private world your looking into out there. People do a lot of things in private they couldn't possibly explain in public.
Lisa: Like killing their wives?
Lt. Doyle: Get that idea out of your head. It will only lead you in the wrong direction.

Lt. Doyle: What do you say we all sit down and have a nice friendly drink too, hmm? Forget all about this. We can tell lies about the good old days during the war.
Lisa: So that's it? You're through with the case?
Lt. Doyle: There is no case to be solved. There never was.

Lt. Doyle: You didn't see the killing or the body. How do you know there was a murder?
Jeff: Because everything this fellow's done has been suspicious: trips at night in the rain, knifes, saws, trunks with rope, and now this wife that isn't there anymore.
Lt. Doyle: I admit it does have a mysterious sound. But it could be any number of things for the wife disappearing. Murder is the least part.
Jeff: Now, Doyle, don't tell me that he's just an unemployed magician amusing the neighborhood with his sleight of hand. Don't tell me that.

Lisa: You can't ignore the wife dissapearing, and the trunk, and the jewelery.
Lt. Doyle: I checked the railroad station. Yesterday at 6:20 am, he bought a ticket. Ten minutes later, he put his wife on a train. Destination: Meritsville. I asure you, the witnesses are that deep.
Lisa: That might have been a woman, but it couldn't have been Mrs. Thorwald. That jewelery...
Lt. Doyle: Look, Miss Fremont, that feminine intuition stuff sells magazines, but in real life it's still a fairy tale. I don't know how many times I chased down leads based on women's intuition.