United States

College students seeking The Abominable Snowman find a cult of killers on an island of terror
Four college students are fascinated with the idea of capturing a live Yeti - known popularly as The Abominable Snowman. With anthropologist Ernest Press (Alan Brock), they leave for remote Boot Island, where its sole inhabitant, Dr. Karl Werner (Tawm Ellis), has reported that the spring thaw had cut off a Yeti's return to the mainland. Terror greets the group when one of the students is clawed to death on the first night. The following morning his grieving girl friend (Darcy Brown) is also killed, apparently by the huge Yeti. The others discover to their amazement that their guns cannot fell the rampaging beast. On a final hunt, Keith (Michael Harris) discovers that the terrifying roars and audible heartbeat of the Yeti are produced by an electronic sound system, and the beast is only the invention of Dr. Prell and an Indian named Laughing Cow (Morton Jacobs). By the time he is able to return to the main house with his news, Karen (Jennifer Stock) has become the next victim and Keith realizes the island is headquarters for a cult of killers. Then the shock ...