Bela Lugosi
Prof. Frederick Brenner aka Karl Wagner
John Archer
Richard Dennison
Wanda McKay
Judy Malvern
Tom Neal
Frankie Mills
Vince Barnett
Charley
John Berkes
Fingers Dolan
J. Farrell MacDonald
Capt. Mitchell
Dave O'Brien
Det. Pete Crawford
Lew Kelly
Doc Brooks
Wheeler Oakman
"Trigger" Stratton
George Eldredge
Det. Thompson (uncredited)
Eddie Kane
Police Chief Martin (uncredited)
Harry 'Snub' Pollard
Knocked-out Motorist (uncredited)
Bernard Gorcey
Shopkeeper (uncredited)
Willy Castello
Jeweler (uncredited)
Bob Reeves
Henchman (unconfirmed) (uncredited)
Walter McGrail
Coroner (uncredited)
Jack Kenney
Usher (uncredited)
Eddie Hall
Tramp playing checkers at 'Friendly Mission' (uncredited)
Theodore Lorch
Tramp Playing Checkers at Friendly Mission (uncredited)
Victor Adamson
Tramp (uncredited)