Clasificación IMDb: 4,3/10 (734 votos)
Director/es: Curt Siodmak
Reparto Barbara Payton (Como Mrs. Dina Van Gelder), Lon Chaney Jr. (Como Police Commissioner Taro), Raymond Burr (Como Barney Chavez), Woody Strode (Como Nedo - Policeman), Tom Conway (Como Dr. Viet)
País: USA Estudio: Realart Pictures Inc.
Duración: 70 minutos.
Argumento: Deep in the South American jungle plantation manager Barney Chavez (Raymond Burr) kills his elderly employer in order to get to his beautiful wife (Barbara Payton). However, an old native witch witnesses the crime and puts a curse on Barney, who soon after finds himself turning nightly into a rampaging gorilla. But is his transformation real or is it all in his head?