He Knows You're Alone

The opening scene is a film-within-a-film of two young women watching a horror slasher film. One of them goes to the ladies room and becomes scared when she feels that someone in the ladies room is watching her. She returns to her seat and tries to tell her friend that there was a man in the ladies room stalking her. The mysterious man sits behind the young woman and waits until there is a murder on the movie screen and then stabs the woman through her seat and then makes a quick getaway into the night. Her friend soon realizes that she is dead and screams. The killer (Tom Rolfing) then boards a bus near the movie theater in Southampton, Long Island. While traveling all night, the killer dozes off and has a flashback to seven years ago; a young bride is murdered on her wedding day by the man she rejected for her current fiancé Len Gamble, a police detective.