The Judge: [Noticing a sleeping juror] Juror #2, the jury will pay strict attention to the evidence.
Juror #2: I'm sorry, your honor, I was up all night with a terrible toothache.
The Judge: [Scolding him] Well, that's too bad, but it's your duty to stay awake and try to follow the evidence with as much intelligence as you've got.

- Peter Lorre in Stranger on the Third Floor (1940)

The Stranger: I want a couple of hamburgers... and I'd like them raw.

- Peter Lorre in Stranger on the Third Floor (1940)

The Stranger: They send you to take me back?
Jane: No, who?
The Stranger: Don't you know? The people who lock you up.
Jane: Why do they want to lock you up?
The Stranger: [Matter-of-factly] Oh, so they can hurt me. They put you in a shirt with long sleeves, and they pour ice water on you.

- Peter Lorre in Stranger on the Third Floor (1940)

District Attorney: [while he's shaving] So now, you believe both murders were committed by the same man, ay?
Michael Ward: Yes, I do.
District Attorney: Well, maybe you're right. As you pointed out, there are certain similarities between the two crimes, but you missed perhaps the most important: both murders were discovered by the same man - you!
Michael Ward: What are you driving at?
District Attorney: Tell me, has there ever been any insanity in your family?

- Charles Waldron in Stranger on the Third Floor (1940)

Albert Meng: [Objecting to Ward's typing] If you have to write, write with a pencil!

- Charles Halton in Stranger on the Third Floor (1940)