The Harrad Experiment meets "Friday the 13th" in this sizzling slice of '70s sexploitation/horror. A group of pleasure-seeking singles arrives at a Caribbean island resort for "an exercise in liberated living," only to be bumped off one by one by a mysterious maniac. Claudia Jennings, Cheri Howell, Greg Mullavey, and Joan Prather star. 83 min. Standard; Soundtrack: English.