This is a new video from WhatCulture that lists 10 mind-blowing hidden clues you never noticed in classic movies. There are so many little clues that are included in many movies that multiple viewings are required in order to catch them. While varying in the format used (dialogue, opening credits scene, subtle props, etc.), they range from foreshadowing tragic deaths to revealing some important aspect of the film's ending. Check out the video below.