Calificación
Reparto

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

J. Farrell MacDonald
Captain O'Brien

Wheeler Oakman
Brady

Ralph Littlefield
Zippo

Jack Mulhall
Reporter

Charles Jordan
O'Toole

Charlie Hall
Barney