Albert Dekker
Dr. Alexander Thorkel
Albert Dekker
Dr. Alexander Thorkel
Thomas Coley
Bill Stockton
Janice Logan
Dr. Mary Robinson
Charles Halton
Dr. Rupert Bulfinch
Victor Kilian
Steve Baker
Frank Yaconelli
Pedro
Paul Fix
Dr. Mendoza
Frank Reicher
Prof. Kendall
Jane Webb
Woman
Billy Wilkerson
Silent Indian
Dale Van Every
Producer
Tom Kilpatrick
Screenplay
Ellsworth Hoagland
Editor
Merian C. Cooper
Producer
Gerard Carbonara
Original Music Composer
Malcolm Stuart Boylan
Screenplay
Ernest B. Schoedsack
Director
Henry Sharp
Director of Photography
A. E. Freudeman
Set Designer
Richard Olson
Sound Recordist
Hollingsworth Morse
Assistant Director
William LeBaron
Executive Producer
Hans Dreier
Art Direction
Robert Odell
Art Direction
Harry Lindgren
Sound Recordist
Charles Gemora
Makeup Artist
A. Earl Hedrick
Art Direction
Albert Hay Malotte
Original Music Composer
Ernst Toch
Original Music Composer