| Person | Type | Job | Role(s) |
|---|---|---|---|
 B.F. Zeidman | Crew | Production | Producer |
 Cedric Gibbons | Crew | Art | Art Direction |
Conrad A. Nervig | Crew | Editing | Editor |
 David Snell | Crew | Sound | Original Music Composer |
 Douglas Shearer | Crew | Sound | Recording Supervision |
 Eddie Imazu | Crew | Art | Art Direction |
 Edwin B. Willis | Crew | Art | Set Decoration |
 George J. Folsey | Crew | Camera | Director of Photography |
Gilbert Kurland | Crew | Production | Unit Manager |
Hayes Goetz | Crew | Directing | Assistant Director |
Howard Shoup | Crew | Costume & Make-Up | Costume Design |
Lennie Hayton | Crew | Sound | Music |
Peter Ruric | Crew | Writing | Screenplay |
 S. Sylvan Simon | Crew | Directing | Director |
Sue MacVeigh | Crew | Writing | Novel |
 Sydney Guilaroff | Crew | Costume & Make-Up | Hairstylist |
 Arthur Q. Bryan | Cast | Actor | Medical Examiner (uncredited) |
 Arthur Space | Cast | Actor | Detective with Doolin (uncredited) |
 Bert Roach | Cast | Actor | Tubby (uncredited) |
Betty Wells | Cast | Actress | 'Baby' Delroy |
Brick Sullivan | Cast | Actor | Police Officer (uncredited) |
 Cecilia Parker | Cast | Actress | Constance 'Connie' Furness |
Chalky Williams | Cast | Police Officer (uncredited) | |
 Connie Gilchrist | Cast | Actress | Pearl Delroy |
 Frank Ferguson | Cast | Actor | Detective Mike McAdams (uncredited) |
 Frank Moran | Cast | Actor | Louis 'Mileaway Louie' Scarpi (uncredited) |
 George Lynn | Cast | Actor | Paul Rinehart |
 Harry Tyler | Cast | Actor | Queenie McQueen (uncredited) |
 Joe Yule | Cast | Actor | Stagehand (uncredited) |
 John Maxwell | Cast | Actor | Detective Strom (uncredited) |
 Lee Phelps | Cast | Actor | First Railroad Yardman (uncredited) |
 Mark Daniels | Cast | Actor | David V. Henderson |
 Millard Mitchell | Cast | Actor | Detective Arthur Doolin |
 Patricia Dane | Cast | Actress | Mida King, Stage Name of Beulah Toohey |
 Ralph Dunn | Cast | Actor | Policeman (uncredited) |
 Roger Moore | Cast | Actor | Police Stenographer (uncredited) |
 Roman Bohnen | Cast | Actor | Ramon |
 Sam Levene | Cast | Actor | Inspector Gunther |
 Sam McDaniel | Cast | Actor | Night Watchman (uncredited) |
 Samuel S. Hinds | Cast | Actor | Roger Furness |
 Stephen McNally | Cast | Actor | 'Turk' (as Horace McNally) |
 Tom Conway | Cast | Actor | Frankie Ciro |
 Van Heflin | Cast | Actor | 'Rocky' Custer |
 Virginia Grey | Cast | Actress | Sue 'Butch' Custer |
 Walter Soderling | Cast | Actor | Autopsy Surgeon (uncredited) |
 William Tannen | Cast | Actor | Second Railroad Yardman (uncredited) |
 Tom Dugan | Cast | Actor | Eric 'Schnelly the Mooch' Schneller (uncredited) |
 Norman Abbott | Cast | Actor | Whistling Messenger (uncredited) |
Christina Teague | Cast | Morgue Nurse (uncredited) | |
Aileen Haley | Cast | Doll (uncredited) | |
Evalene Bankston | Cast | Blonde (uncredited) | |
| Person | Type | Job | Role(s) |
