Whodunnit movies of the 1920's - 1950's?

Question:

Whodunnit movies of the 1920's - 1950's?

I am a high school sophomore working on my master screenplay. I go to a vocational high school. I will write, produce, and direct my movie, probably using 16mm film. Anyway, my story is an homage to old whodunnut? mysteries. It is original, and fresh, plus it has a twist at the end of it that I really enjoy. Yet, while directing, and rewriting it, I want to give many cliches to the film. Examples are a young woman screaming after a gunshot and a sinister German doctor. If someone could provide me with a lengthy list of Whodunnits from the era I would greatly appriciate it. On a plus, if you could maybe give me some cliches you know of, I will be sure to add them to the screenplay, to raise the style.

My movie will be sent into festivals. Thank you.

Best Answer - Chosen by Asker: Check out mystery movies with Alan Ladd and Veronica Lake! Here's a link with great quotes.