“- Mortimer Brewster: How can I believe you? There are twelve men down in the cellar and you admit you poisoned them.
- Abby Brewster: Yes, I did. But you don't think I'd stoop to telling a fib.”
Cary Grant - Mortimer Brewster
Josephine Hull - Abby Brewster

“- Valjean: How do you know I'm not going to murder you?
- Bishop: How do you know I'm not going to murder you?
- Valjean: What is that - a joke?
- Bishop: I guess we'll have to trust each other.”
Liam Neeson - Valjean
Peter Vaughan - Bishop

“- Julian Marty: I'll give you 10,000 dollars.
- Private Detective Loren Visser: Now I... do a murder. Two murders. Trust you not to go simple on me and do something stupid. I mean, really stupid. Now, why should I trust you?
- Julian Marty: For the money.”
M. Emmet Walsh - Private Detective Loren Visser
Dan Hedaya - Julian Marty

“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!”

Charles Waldron - District Attorney

“Murder is my favorite crime.”
Clifton Webb - Waldo Lydecker