He Knows You're Alone

A young bride is murdered on her wedding day by the man she rejected for her current fiancé, Len Gamble, a detective. Several years later, a young bride-to-be named Marie is stabbed to death in a movie theater while her friend Ruthie sits beside her. The killer, Ray Carlton, disappears into the night. The next morning, Ray arrives on Staten Island, where he observes university student Amy Jensen from a distance. Amy is preparing for her wedding.