A scientist is turned into an ape man.
Bela Lugosi
Dr. James Brewster
Louise Currie
Billie Mason
Wallace Ford
Jeff Carter
Henry Hall
Dr. George Randall
Minerva Urecal
Agatha Brewster
Emil Van Horn
The Ape
Wheeler Oakman
Brady
Ralph Littlefield
Zippo
Jack Mulhall
Reporter
Charles Jordan
O'Toole
Charlie Hall
Barney
William Beaudine
Director
Barney A. Sarecky
Screenplay
Mack Stengler
Director of Photography
Carl Pierson
Editor
Jack Dietz
Producer
Sam Katzman
Karl Brown
Story
Glen Glenn
Sound
Arthur Hammond
Assistant Director
Dave Milton
Art Direction
Associate Producer
