นักแสดง
Milburn Stone
Fred Mason
Acquanetta
Paula Dupree, the Ape Woman
Nana Bryant
Miss Gray
Fern Emmett
Beth's Neighbor (archive footage / uncredited)
Nolan Leary
Inquest Juror (uncredited)
Douglass Dumbrille
District Attorney
Pierre Watkin
Dr. Meredith
Clyde Beatty
Fred Mason (in long shots) (archive footage / uncredited)
John Carradine
Dr. Sigmund Walters (archive footage / uncredited)
Ray Corrigan
Cheela (archive footage / uncredited)
Tom Keene
Joe, the Fingerprint Man
Heinie Conklin
Inquest Juror (uncredited)
Beatrice Roberts
Inquest Juror (uncredited)
Ray Walker
Ringmaster (archive footage / uncredited)
Evelyn Ankers
Beth Mason
Christian Rub
George
Alec Craig
Caretaker
Vince Barnett
Curley (archive footage / uncredited)
J. Carrol Naish
Dr. Carl Fletcher
Samuel S. Hinds
Coroner
Lois Collier
Joan Fletcher