Curt Siodmak Director, Screenwriter Barbara Payton Mrs. Dina Van Gelder Actor Lon Chaney Jr. Police Commissioner Taro Actor Raymond Burr Barney Chavez Actor Tom Conway Dr. Viet Actor Paul Cavanagh Klaas Van Gelder Actor Gisela Werbiseck Al-Long Actor Carol Varga Larina Actor Paul Maxey Van Heusen Actor Charles Van Enger Cinematographer Raoul Kraushaar Original Music Frank Paul Sylos Art Director Edward G. Boyle Set Decoration