 Bela LugosiProf. Frederick Brenner aka Karl Wagner | Prof. Frederick Brenner aka Karl Wagner |
 John ArcherRichard Dennison | Richard Dennison |
 Wanda McKayJudy Malvern | Judy Malvern |
 Tom NealFrankie Mills | Frankie Mills |
 Vince BarnettCharley | Charley |
| AAnna HopeMrs. Brenner | Mrs. Brenner |
 John BerkesFingers Dolan | Fingers Dolan |
 J. Farrell MacDonaldCapt. Mitchell | Capt. Mitchell |
 Dave O'BrienDet. Pete Crawford | Det. Pete Crawford |
| LLucille VanceMrs. Malvern | Mrs. Malvern |
 Lew KellyDoc Brooks | Doc Brooks |
 Wheeler Oakman"Trigger" Stratton | "Trigger" Stratton |
| RRay MillerThe Big Tramp | The Big Tramp |
 George EldredgeDet. Thompson (uncredited) | Det. Thompson (uncredited) |
 Eddie KanePolice Chief Martin (uncredited) | Police Chief Martin (uncredited) |
 Harry 'Snub' PollardKnocked-out Motorist (uncredited) | Knocked-out Motorist (uncredited) |
 Bernard GorceyShopkeeper (uncredited) | Shopkeeper (uncredited) |
 Willy CastelloJeweler (uncredited) | Jeweler (uncredited) |
 Bob ReevesHenchman (unconfirmed) (uncredited) | Henchman (unconfirmed) (uncredited) |
 Walter McGrailCoroner (uncredited) | Coroner (uncredited) |
 Jack KenneyUsher (uncredited) | Usher (uncredited) |
| RRalph LittlefieldCards-player Tramp (uncredited) | Cards-player Tramp (uncredited) |
| PPat CostelloTramp questioned by Richard (uncredited) | Tramp questioned by Richard (uncredited) |
 Eddie HallTramp playing checkers at 'Friendly Mission' (uncredited) | Tramp playing checkers at 'Friendly Mission' (uncredited) |
 Theodore LorchTramp Playing Checkers at Friendly Mission (uncredited) | Tramp Playing Checkers at Friendly Mission (uncredited) |
 Victor AdamsonTramp (uncredited) | Tramp (uncredited) |
| BBobby StoneNewsboy (uncredited) | Newsboy (uncredited) |
