| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bert Spurlin | Crew | Directing | Assistant Director |
 Bronislau Kaper | Crew | Sound | Original Music Composer |
 Cedric Gibbons | Crew | Art | Art Direction |
Charles Lawton Jr. | Crew | Camera | Director of Photography |
 Charles Lederer | Crew | Directing | Director |
Daniele Amfitheatrof | Crew | Sound | Original Music Composer |
 Douglas Shearer | Crew | Sound | Sound Director |
 Edwin B. Willis | Crew | Art | Set Decoration |
George Boemler | Crew | Editing | Editor |
 Harry Stradling Sr. | Crew | Camera | Director of Photography |
Howard Shoup | Crew | Costume & Make-Up | Costume Design |
Irving Starr | Crew | Production | Producer |
Lawrence P. Bachmann | Crew | Writing | Screenplay |
Leonid Raab | Crew | Sound | Orchestrator |
Mario Castelnuovo-Tedesco | Crew | Sound | Original Music Composer |
Rose Caylor | Crew | Writing | Story, Screenplay |
William Ferrari | Crew | Art | Art Direction |
Charles Mandell | Crew | Crew | Technical Advisor |
Arthur Belasco | Cast | Actor | Fat Man (uncredited) |
 Arthur O'Connell | Cast | Actor | Photographer (uncredited) |
 Basil Rathbone | Cast | Actor | Cesar Ferrari / Dr. H. Santelle |
 Bert Roach | Cast | Actor | Krum |
 Brooks Benedict | Cast | Actor | Psychiatrist at Lecture (uncredited) |
 Byron Foulger | Cast | Actor | Bird Man (uncredited) |
 Charles D. Brown | Cast | Actor | Police Inspector Gallagher |
 Charles Wagenheim | Cast | Actor | Fred F. Bixley |
 Cliff Clark | Cast | Police Lieutenant Allison | |
Count Stefenelli | Cast | Psychiatrist at Lecture (uncredited) | |
 Cyril Ring | Cast | Actor | Psychiatrist at Lecture (uncredited) |
Eddie Buzard | Cast | Tall Newsboy (uncredited) | |
 Eddie Parker | Cast | Actor | Ambulance Driver (uncredited) |
 Eddy Chandler | Cast | Actor | Bill (uncredited) |
 Edna Holland | Cast | Actress | Clinic Nurse (uncredited) |
 Edward Hearn | Cast | Actor | Citizen (uncredited) |
 Edwin Stanley | Cast | Actor | Hospital Doctor (uncredited) |
 Emmett Vogan | Cast | Actor | Hotel Manager (uncredited) |
Ernie Alexander | Cast | Actor | Reporter (uncredited) |
 Frances Rafferty | Cast | Actress | Clinic Switchboard Operator (uncredited) |
 Frank Marlowe | Cast | Actor | Cabbie with Cat (uncredited) |
 Frank McLure | Cast | Actor | Psychiatrist at Lecture (uncredited) |
Frank Whitbeck | Cast | Actor | Trailer Announcer (Voice) (uncredited) |
 George M. Carleton | Cast | Actor | Meeting Chairman (uncredited) |
 George Magrill | Cast | Actor | Policeman (uncredited) |
 George Ovey | Cast | Actor | Old Man with Telegram (uncredited) |
 Harold Miller | Cast | Actor | Psychiatrist at Lecture (uncredited) |
 Hooper Atchley | Cast | Actor | Ambulance Doctor (uncredited) |
 Iris Adrian | Cast | Actress | Babe Stanton (uncredited) |
Jack Gardner | Cast | Actor | Reporter (uncredited) |
 James Flavin | Cast | Actor | Police Lieutenant Schaeffer |
 James Millican | Cast | Actor | Reporter (uncredited) |
 Jerry Maren | Cast | Actor | Small Boy (uncredited) |
 Joe Yule | Cast | Actor | Citizen (uncredited) |
 Jules Cowles | Cast | Actor | Crazy Man at the Clinic (uncredited) |
 King Baggot | Cast | Actor | Psychiatrist at Lecture (uncredited) |
 Laraine Day | Cast | Actress | Edwina 'Eddie' Brown |
 Lee Phelps | Cast | Actor | Police Telephone Operator (uncredited) |
Leslie Denison | Cast | Actor | Paul (uncredited) |
 Lester Dorr | Cast | Actor | Photographer (uncredited) |
 Lew Ayres | Cast | Actor | Oliver Duffy |
 Mahlon Hamilton | Cast | Actor | Reporter (uncredited) |
Margaret Bert | Cast | Actress | Mrs. Geversar (uncredited) |
 Mark Daniels | Cast | Actor | Haguey |
 Mary Currier | Cast | Actress | Miss Hewitt (uncredited) |
 Miles Mander | Cast | Actor | Dr. Kurt Immelman |
 Milton Parsons | Cast | Actor | Jarvis J. Banhoff (uncredited) |
 Ralph Brooks | Cast | Actor | Dr. Shepherd (uncredited) |
 Ralph Dunn | Cast | Actor | Policeman Outside Clinic (uncredited) |
 Rand Brooks | Cast | Actor | Young Reporter (uncredited) |
 Ray Teal | Cast | Actor | Police Car #12 Driver (uncredited) |
 Robert Homans | Cast | Actor | Officer O'Garrity |
 Roger Moore | Cast | Actor | Jim (uncredited) |
 Russell Gleason | Cast | Actor | Ogilvie |
 Russell Hicks | Cast | Actor | Dr. Chandley |
 Sam Ash | Cast | Actor | Theater Stage Manager (uncredited) |
 Wally Cassell | Cast | Actor | Photographer (uncredited) |
 Walter Kingsford | Cast | Actor | Dr. Cromwall |
William Lally | Cast | Actor | Police Sergeant (uncredited) |
 William Tannen | Cast | Actor | Devlan |
Bobby Callahan | Cast | Actor | Small Newsboy (uncredited) |
Cliff Danielson | Cast | Hotel Clerk (uncredited) | |
Robert Bradford | Cast | Whistles 'Over the Rainbow' (uncredited) | |
David Tihmar | Cast | Dance Teacher (uncredited) | |
Dick Midgley | Cast | Police Driver (uncredited) | |
| Person | Type | Job | Role(s) |
