On a small secluded island off the English coast, three teenagers are murdered. While on the face of it, it appears the surviving teen (Candace Glendenning) killed her friends, the investigator (Bryant Haliday) on the case isn't so sure. He goes to the island along with a group of archaeologists, who are looking for Phoenician artifacts, to investigate. Dismissed upon its release, the film has a small cult following today. The film is probably the first teen slasher flick some eight years before FRIDAY THE 13TH debuted. There's copious amounts of gratuitous nudity, both male and female, and of course, if you have sex you die. The film is set mostly at night and shrouded in fog which attempts to hide the fact that they're actually on a film sound stage rather than a real island. With radio communication cut off and the island's only boat burned up, the movie begins to feel like a variation of Agatha Christie's AND THEN THERE WERE NONE as the one by one they're killed off. It's not particularly difficult to identify the "killer". Directed by Jim O'Connolly (VALLEY OF GWANGI). With Jill Haworth (EXODUS), Dennis Price, George Coulouris, Anna Palk and John Hamill.