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