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