Directed by Ernest B. Schoedsack
Produced by Merian C. Cooper
Written by Tom Kilpatrick
Based on Novels by Henry Kuttner
Director of Photography : Henry Sharp
Film Editing by Ellsworth Hoagland
Original music by Gerard Carbonara, Albert Hay Malotte, Ernst Toch
Production Design by A.E. Freudeman
Art Director : Hans Dreier, A. Earl Hedrick
Color Art Director : Natalie Kalmus
Cast
Albert Dekker (Dr. Thorkel)
Thomas Coley (Bill Stockton)
Janice Logan (Dr. Mary Robinson)
Charles Halton (Dr. Bulfinch)
Victor Kilian (Steve Baker)
Frank Yaconelli (Pedro)
Paul Fix (Dr. Mendoza)
Frank Reicher (Professor Kendall)