Arch Oboler Director, Screenwriter, Producer Robert Stack Bob Hayward Actor Barbara Britton Alice Hayward Actor Nigel Bruce Dr. Angus McLean Actor Ramsay Hill Major Parkhurst Actor Paul McVey Commissioner Actor Hope Miller Portuguese girl Actor John Dodsworth Sir William Drayton Actor Bhogwan Singh Indian Headman Actor Joseph F. Biroc Cinematographer John Hoffman Film Editing Gordon Jenkins Original Music