| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adele Comandini | Crew | Writing | Screenplay |
 Adolph Deutsch | Crew | Sound | Original Music Composer |
Bertram Tuttle | Crew | Art | Supervising Art Director |
C. Graham Baker | Crew | Writing | Screenplay |
Charles David Forrest | Crew | Sound | Music |
 Edwin B. DuPar | Crew | Crew | Special Effects |
Elmer Decker | Crew | Directing | Assistant Director |
Everett Alton Brown | Crew | Sound | Sound |
Frank Magee | Crew | Editing | Editor |
Harry Barndollar | Crew | Crew | Special Effects |
 Jack L. Warner | Crew | Production | Executive Producer |
Jack McConaghy | Crew | Art | Set Decoration |
James Leicester | Crew | Crew | Editorial Staff |
 James Wong Howe | Crew | Camera | Director of Photography |
 Leo F. Forbstein | Crew | Sound | Music Director |
Milo Anderson | Crew | Costume & Make-Up | Costume Design |
Perc Westmore | Crew | Costume & Make-Up | Makeup Artist |
Phyllis Bottome | Crew | Writing | Novel |
 Robert Florey | Crew | Directing | Director |
Stanley Fleischer | Crew | Art | Art Direction |
William Jacobs | Crew | Production | Producer |
Robert G. Wayne | Crew | Sound | Sound Re-Recording Mixer |
Murray Cutter | Crew | Sound | Orchestrator |
Gerald W. Alexander | Crew | Sound | Sound Re-Recording Mixer |
Vernon Larson | Crew | Camera | Additional Camera |
 Addison Richards | Cast | Actor | Police Inspector |
 Bruce Bennett | Cast | Actor | Dr. Andrew Lang |
 Clancy Cooper | Cast | Actor | Police Captain with Suicide Note |
 Faye Emerson | Cast | Actress | Hilda Fenchurch |
 J. Scott Smart | Cast | Actor | Mrs. Crockett's Roomer |
 John Ridgely | Cast | Actor | Thomas Turner |
 Joyce Compton | Cast | Actress | Kate |
 Mary Servoss | Cast | Actress | Mrs. Fenchurch |
 Mona Freeman | Cast | Actress | Anne Fenchurch |
 Monte Blue | Cast | Actor | Policeman in Car |
 Paul Panzer | Cast | Actor | Police in Office |
 Richard Erdman | Cast | Actor | Bunkie Taylor (as Dick Erdman) |
 Robert Arthur | Cast | Actor | Hotel Boy |
 Rosemary DeCamp | Cast | Actress | Dr. Jane Silla |
 Virginia Sale | Cast | Actress | Mrs. Crockett |
 Zachary Scott | Cast | Actor | Ronnie Mason |
 Howard M. Mitchell | Cast | Actor | Roomer |
James Notaro | Cast | Policeman in Car | |
| Person | Type | Job | Role(s) |
