Otto Kruger
Dr. Stendahl
Acting
Vicky Lane
Paula Dupree - the Ape Woman
Acting
Amelita Ward
Ann Forrester
Acting
Phil Brown
Don Young
Acting
Jerome Cowan
Detective W.L. Harrigan
Acting
Rondo Hatton
Moloch the Brute
Acting
Eddie Acuff
Bill
Acting
Ernie Adams
Jim
Acting
Charles Wagenheim
Fred
Acting
Eddy Chandler
Motorcycle Cop
Acting
Jack Overman
Detective - George
Acting
Pat Gleason
Tom - Second Morgue Attendant (uncredited)
Acting
William Murphy
Johnny - Errand Boy (uncredited)
Acting
Bob Pepper
Policeman at Morgue (uncredited)
Acting