Cast 12
Bela Lugosi
Prof. Dexter
John Carradine
Prof. John Gilmore
Frank Moran
Ape Man
Teala Loring
Anne Gilmore
Tod Andrews
Steve Rogers
Mary Currier
Hilda Gilmore
Ernie Adams
Tramp, Willie the Weasel
Eddy Chandler
Sergeant
George Zucco
Ape Man
Mike Donovan
Policeman Barney (uncredited)
George Eldredge
Policeman (uncredited)
Horace B. Carpenter
Theater Watchman (uncredited)
Crew 12
Phil Rosen
Director
Robert Charles
Screenplay
Jack Dietz
Producer
Sam Katzman
Producer
Barney A. Sarecky
Associate Producer
Marcel Le Picard
Director of Photography
Carl Pierson
Editor
Arthur Hammond
Assistant Director
Dave Milton
Set Designer
Glen Glenn
Sound Engineer
Ray Mercer
Special Effects
Edward J. Kay
Music Director