Why are top scientists being murdered one by one? Is it possible that the killer actually possesses psychic powers? Can biologist Dr. Jim Tanner (George Hamilton) and geneticist Dr. Margery Lansing (Suzanne Pleshette) figure out what the maniac really wants? Imaginative sci-fi thriller, based on the Frank M. Robinson novel, boasts a musical score by Miklós Rózsa and co-stars Yvonne De Carlo, Richard Carlson, Aldo Ray, and Nehemiah Persoff; produced by George Pal and directed by Byron Haksin. 109 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono.