What are the best subtle instances of "something doesn't feel right" in film?

What scenes in film employ this technique. In the forefront every seems okay, but a particular line of dialogue causes you to do a double take. Perhaps a change in music. Mood, etc. one of my favorite instances is when Bateman runs across the real estate agent in American Psycho.

The warning of "don't come back" and the change in the lighting really seal the deal.

Submitted January 28, 2024 at 01:28AM by Toni-Cipriani https://ift.tt/jqCbSct