The Trollenberg Terror (released in the United States as The Crawling Eye) is a 1958 British science fiction horror film produced by Robert S. Baker and Monty Berman and directed by Quentin Lawrence. The film stars Forrest Tucker, Laurence Payne and Jennifer Jayne. The special effects are by Les Bowie. The story is based on a 1956 British ITV "Saturday Serial" television programme written by George F. Kerr, Jack Cross and Giles Cooper under the collective pseudonym of "Peter Key". The film was released as The Crawling Eye in the United States on 7 July 1958 by Distributors Corporation of America and as The Trollenberg Terror in the United Kingdom in October 1958 by Eros Films. It played on a double bill with the British science fiction film The Strange World of Planet X, retitled Cosmic Monsters for American audiences.

Plot

On the Swiss mountain Trollenberg, one of three student climbers is suddenly killed, his head ripped from his body. Two sisters, Anne and Sarah Pilgrim, a London mind-reading act, are travelling by train to Geneva when Anne faints as the train passes the mountain. Upon waking, Anne insists that they must get off at the next stop.