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 (uncredited)
Billy Wilkerson
Silent Indian (uncredited)
Ernest B. Schoedsack
Director
Merian C. Cooper
Producer
Dale Van Every
Producer
