“- Tom: This is supposed to be good for cigarette mouth. Do you smoke?
- Alice: When I drink or go out at night, I smoke. I live dangerously - on the edge. I'm no kindergarten teacher.”
Robert Sean Leonard - Tom
Chloë Sevigny - Alice

“We've just discovered the most wonderful, the most marvelous poisinous gas. It will kill everybody.”
Billy Gilbert - Herring

“Poison is a woman's weapon.”
Steven Geray - Dr. Retling

“- 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

“- Abby Brewster: The gentleman died because he drank some wine with poison in it.
- Mortimer Brewster: How did the poison get in the wine?
- Martha Brewster: We put in wine because it's less noticeable. When it's in tea it has a distinct odor.”
Josephine Hull - Abby Brewster
Cary Grant - Mortimer Brewster
Jean Adair - Martha Brewster