The Prowler (also known as Rosemary's Killer) is a 1981 horror film directed by Joseph Zito, and written by Neal Barbera and Glenn Leopold. During the Second World War a woman named Rosemary Chatham breaks up with her boyfriend who is serving in the army, via letter. On June 28, 1945, the town of Avalon Bay holds its graduation dance. Rosemary (Joy Glaccum) and her new boyfriend Roy (Timothy Wahrer) leave the party and are murdered by a mysterious prowler in combat uniform who impales them on a pitchfork. Thirty five years later Pam MacDonald (Vicky Dawson) revives the graduation dance.