Hitchcock's Techniques for Suspense

1. Extreme close-ups are only used in important situations, so not often.
    Example: When they write the note to Mr. Thorwald

2. The characters will talk about gruesome things when eating.
    Example: When the nurse is guessing how Mr. Thorwald killed his wife, and Jeff is eating.

3. Keeps the story simple.
    Example: It's not a confusing storyline, it's quite straightforward.