#39: Barbershop Madness

This sounds like the opening to a murder mystery. A man walks down the street to do something mundane and feels this impending doom, so he decides to wait a while before doing his errand, only to find that he might have been murdered if he’d gone on with his day!

In the movie, he would be the only one who saw possible clues, and he would have to work with the police to uncover the subconscious things he saw to catch the murderer, all while the murderer was after him knowing he was a prime witness. Has this been written and filmed yet?