| Person | Type | Job | Role(s) |
|---|---|---|---|
 Albert Glasser | Crew | Sound | Original Music Composer |
Alfred DeGaetano | Crew | Editing | Supervising Editor |
Armor Marlowe | Crew | Art | Set Decoration |
 Bud Westmore | Crew | Costume & Make-Up | Makeup Department Head |
Emmett Emerson | Crew | Directing | Assistant Director |
Gene Fowler Jr. | Crew | Editing | Editor |
George J. Teague | Crew | Crew | Special Effects |
 Howard W. Koch | Crew | Directing | Assistant Director |
Howard Welsch | Crew | Production | Producer |
J.N.A. Hawkins | Crew | Sound | Sound Director |
Jackson Rose | Crew | Camera | Director of Photography |
Percy Townsend | Crew | Sound | Sound Mixer |
Perry Smith | Crew | Art | Art Direction |
Robert E. Kent | Crew | Writing | Screenplay |
 S.S. Van Dine | Crew | Writing | Characters |
 William Beaudine | Crew | Directing | Director |
William Beaudine Jr. | Crew | Directing | Second Assistant Director |
Dorothy Drake | Crew | Costume & Make-Up | Wardrobe Supervisor |
Irving Friedman | Crew | Sound | Music Director |
Eunice King | Crew | Costume & Make-Up | Hairstylist |
Ann Staunton | Cast | Actress | Helen Varney Blendon |
 Broderick O'Farrell | Cast | Actor | Dr. Campbell (Uncredited) |
 Clara Blandick | Cast | Actress | Stella Blendon |
 Damian O'Flynn | Cast | Actor | Larry Blendon |
 Eddie Dunn | Cast | Actor | Police Lieutenant Mullard (Uncredited) |
 Frank Wilcox | Cast | Actor | George Hullman |
 Iris Adrian | Cast | Actress | Maggie McCarthy / Choo-Choo Divine |
 Leon Belasco | Cast | Actor | Alexis Karnoff |
 Mary Scott | Cast | Actress | Mary |
 Ramsay Ames | Cast | Actress | Virginia Berneaux |
 Vivian Austin | Cast | Actress | Lorena Blendon Simms |
 Wade Crosby | Cast | Actor | Choo-Choo's Bodyguard (Uncredited) |
 William Wright | Cast | Actor | Philo Vance |
 Tim Murdock | Cast | Actor | The Policeman |
Phyllis Planchard | Cast | Agatha Cowle (Uncredited) | |
Cy Stevens | Cast | Greg Simms (Uncredited) | |
| Person | Type | Job | Role(s) |
