This one is interesting because I disproved the Bloody Mary myth but I still think the concept is interesting and this idea is taken from another Supernatural episode where Mary would show up after her chant and kill people who have kept quiet about killing other people and then leave a hand print with that person’s victim’s name on the back of the mirror.
This is a horror/paranormal
Title Idea: Don’t Look In The Mirror
General Idea: A spirit lurks in the mirrors in a small town. She haunts people who have secrets, specifically murders. She haunts them for seven days before finally causing them to die in the same way their victim’s did.