| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anthony Veiller | Crew | Writing | Screenplay |
 Arthur Roberts | Crew | Editing | Editor |
Bernard Newman | Crew | Costume & Make-Up | Costume Design |
 Clem Beauchamp | Crew | Directing | Assistant Director |
Clem Portman | Crew | Sound | Sound |
Darrell Silvera | Crew | Art | Set Dresser |
Edward Kaufman | Crew | Production | Associate Producer |
Harry Redmond Jr. | Crew | Crew | Special Effects |
J. Roy Hunt | Crew | Camera | Director of Photography |
Jack MacKenzie | Crew | Camera | Second Unit Director of Photography |
 James Edward Grant | Crew | Writing | Story |
John L. Cass | Crew | Sound | Sound Recordist |
John Sherwood | Crew | Directing | Second Assistant Director |
 Max Steiner | Crew | Sound | Original Music Composer |
Perry Ferguson | Crew | Art | Assistant Art Director |
 Roy Webb | Crew | Sound | Music Director, Original Music Composer |
Stephen Roberts | Crew | Directing | Director |
 Van Nest Polglase | Crew | Art | Art Direction |
Wallace Fox | Crew | Directing | Second Unit Director |
Louis Shapiro | Crew | Directing | Second Assistant Director |
Amalia Kent | Crew | Crew | Script |
Ruthalice Selznick | Crew | Crew | Script |
 Al St. John | Cast | Actor | Morgue Attendant (uncredited) |
Bob Tansill | Cast | Joe Jerino (uncredited) | |
 Buster Slaven | Cast | Actor | Newsboy (uncredited) |
 Charles Richman | Cast | Actor | Mr. Curtis (uncredited) |
 Dorothy Granger | Cast | Actress | Fill-in Receptionist (uncredited) |
Edward McWade | Cast | Actor | Minister in Film (uncredited) |
 Eric Blore | Cast | Actor | Stokes, Bradford's Butler |
 Erin O'Brien-Moore | Cast | Actress | Mrs. Summers |
 Frank M. Thomas | Cast | Actor | Mike North (uncredited) |
 Frank Reicher | Cast | Actor | Henry Strand (uncredited) |
 Frankie Darro | Cast | Actor | Spike Salisbury (uncredited) |
 Grant Mitchell | Cast | Actor | John Summers, Luxury's Owner |
Henry Stone | Cast | Ray Torro (uncredited) | |
 James Donlan | Cast | Actor | Taxi Driver (uncredited) |
 James Gleason | Cast | Actor | Inspector Corrigan |
 Jean Arthur | Cast | Actress | Paula Bradford |
 John Dilson | Cast | Actor | Analyst Examining Gelatin Capsule (uncredited) |
 John Sheehan | Cast | Actor | Bert Murphy (uncredited) |
 Johnny Arthur | Cast | Actor | Mr. Frankenstein (uncredited) |
 Lila Lee | Cast | Actress | Miss Prentiss, Bradford's Receptionist |
 Lucile Gleason | Cast | Actress | Mrs. Hutchins |
 Paul Fix | Cast | Actor | Lou Pender (uncredited) |
 Ralph Morgan | Cast | Actor | Leroy Hutchins, War Cloud's Owner |
 Robert Armstrong | Cast | Actor | Nick Martel, Bookie |
 Rollo Lloyd | Cast | Actor | Landlord (uncredited) |
 Sam Hayes | Cast | Race Announcer (uncredited) | |
 Spencer Charters | Cast | Actor | Dr. Bunting (uncredited) |
 Stanley Blystone | Cast | Actor | Police Radio Operator (uncredited) |
 Syd Saylor | Cast | Actor | Detective (uncredited) |
 Tom Brower | Cast | Actor | Police Sergeant (uncredited) |
 William Powell | Cast | Actor | Dr. Lawrence 'Brad' Bradford |
| Person | Type | Job | Role(s) |
