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Bela Lugosi as Prof. Frederick Brenner aka Karl Wagner |
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John Archer as Richard Dennison |
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Wanda McKay as Judy Malvern |
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Tom Neal as Frankie Mills |
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Vince Barnett as Charley |
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Anna Hope as Mrs. Brenner |
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John Berkes as Fingers Dolan |
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J. Farrell MacDonald as Capt. Mitchell |
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Dave O'Brien as Det. Pete Crawford |
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Lucille Vance as Mrs. Malvern |
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Lew Kelly as Doc Brooks |
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Wheeler Oakman as "Trigger" Stratton |
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Ray Miller as The Big Tramp |
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George Eldredge as Det. Thompson (uncredited) |
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Eddie Kane as Police Chief Martin (uncredited) |
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Harry 'Snub' Pollard as Knocked-out Motorist (uncredited) |
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Bernard Gorcey as Shopkeeper (uncredited) |
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Willy Castello as Jeweler (uncredited) |
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Bob Reeves as Henchman (unconfirmed) (uncredited) |
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Walter McGrail as Coroner (uncredited) |
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Jack Kenney as Usher (uncredited) |
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Ralph Littlefield as Cards-player Tramp (uncredited) |
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Pat Costello as Tramp questioned by Richard (uncredited) |
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Eddie Hall as Tramp playing checkers at 'Friendly Mission' (uncredited) |
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Theodore Lorch as Tramp Playing Checkers at Friendly Mission (uncredited) |
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Victor Adamson as Tramp (uncredited) |
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Bobby Stone as Newsboy (uncredited) |
| Directing | Wallace Fox | Director |
| Writing | Sam Robins | Original Story |
| Writing | Gerald Schnitzer | Screenplay |
| Production | Jack Dietz | Producer |
| Production | Sam Katzman | Producer |
| Production | Barney A. Sarecky | Producer |
| Art | Dave Milton | Art Direction |
| Sound | Glen Glenn | Sound Engineer |
| Editing | Carl Pierson | Editor |
| Camera | Mack Stengler | Director of Photography |
| Sound | Edward J. Kay | Original Music Composer |
| Directing | Arthur Hammond | Assistant Director |
