| Person | Type | Job | Role(s) |
|---|---|---|---|
 Clarence Eurist | Crew | Directing | Assistant Director |
David Chudnow | Crew | Sound | Music Supervisor |
Don L. Cash | Crew | Costume & Make-Up | Makeup Artist |
 Douglas Sirk | Crew | Directing | Director |
Henry S. Kesler | Crew | Production | Associate Producer |
Herschel Burke Gilbert | Crew | Sound | Orchestrator |
 Hunt Stromberg | Crew | Production | Executive Producer, Presenter |
Jacques Companéez | Crew | Writing | Story |
James E. Newcom | Crew | Editing | Supervising Editor |
John M. Foley | Crew | Editing | Editor |
John R. Carter | Crew | Sound | Sound |
Josephine Sweeney | Crew | Costume & Make-Up | Hairstylist |
Leo Rosten | Crew | Writing | Screenplay |
Michel Michelet | Crew | Sound | Original Music Composer |
Nicolai Remisoff | Crew | Art | Production Design, Art Direction |
Ramsay Hill | Crew | Crew | Technical Advisor |
Simon Gantillon | Crew | Writing | Story |
Victor Greene | Crew | Art | Assistant Art Director |
William H. Daniels | Crew | Camera | Director of Photography |
Ernest Neuville | Crew | Writing | Story |
Joseph I. Kane | Crew | Sound | Sound |
Elois Jenssen | Crew | Costume & Make-Up | Costume Design |
James Nasser | Crew | Production | Producer |
H. Connors | Crew | Sound | Sound |
 Alan Mowbray | Cast | Actor | Lyle Maxwell |
 Alan Napier | Cast | Actor | Detective Gordon |
Alex Frazer | Cast | Actor | Professor Harkness |
 Ann Codee | Cast | Actress | Matilda |
 Annette Warren | Cast | Actress | Blonde Nightclub Singer |
 Boris Karloff | Cast | Actor | Charles van Druten |
 Brooks Benedict | Cast | Actor | Concertgoer |
 Carl M. Leviness | Cast | Actor | Concertgoer |
 Cedric Hardwicke | Cast | Actor | Julian Wilde |
 Charles Coburn | Cast | Actor | Inspector Harley Temple |
 Charles Coleman | Cast | Actor | Sir Charles |
 Colin Campbell | Cast | Actor | Wilberforce |
 Cyril Delevanti | Cast | Actor | Medical Examiner |
 Dorothy Vaughan | Cast | Actress | Mrs. Miller, Fleming's Housekeeper |
 Eddie Parks | Cast | Oswald Pickering | |
Eric Wilton | Cast | Actor | Ticket Booth Clerk |
 Ethan Laidlaw | Cast | Actor | Man in Dance Hall |
 Ethelreda Leopold | Cast | Blonde Nightclub Singer | |
 Florence Wix | Cast | Actress | "Blue Eyes" |
 Frank McLure | Cast | Actor | Concertgoer |
 George Sanders | Cast | Actor | Robert Fleming |
 George Zucco | Cast | Actor | Officer H.R. Barrett |
 Gerald Hamer | Cast | Actor | Harry Milton |
 Harold Miller | Cast | Actor | Concertgoer in Lobby |
 Herbert Evans | Cast | Actor | Fleming's Butler |
 Isabel La Mal | Cast | Actress | Dowager Shushing Fleming at Concert |
Jack Chefe | Cast | Actor | Pierre, Headwaiter |
Jack Deery | Cast | Actor | Police Officer |
 James Conaty | Cast | Actor | Concertgoer |
 Jeffrey Sayre | Cast | Actor | Concertgoer |
 Jimmy Aubrey | Cast | Actor | Nelson |
John Rice | Cast | Actor | Police Officer |
 Joseph Calleia | Cast | Actor | Nicholas Moryani |
 Lucille Ball | Cast | Actress | Sandra Carpenter |
 Marjorie Hoshelle | Cast | Actress | Robert's Rejected Girlfriend |
 Robert Coote | Cast | Actor | Detective Wilson |
Robert Haines | Cast | Actor | Concertgoer |
 Sam Harris | Cast | Actor | Old Man at Concert Asking for Whiskey |
 Sayre Dearing | Cast | Actor | Concertgoer in Lobby |
 Shep Houghton | Cast | Actor | Nightclub Patron |
 Stuart Hall | Cast | Actor | Charles, Fleming's Chauffeur |
 Tanis Chandler | Cast | Actress | Lucy Barnard |
 Wilbur Mack | Cast | Actor | Concertgoer |
 Wilson Benge | Cast | Actor | Police Criminologist |
 Wyndham Standing | Cast | Actor | Assistant Medical Examiner |
 Mike Lally | Cast | Actor | Mike, Nightclub Bartender |
 Sol Murgi | Cast | Nightclub Patron | |
Charles Ferguson | Cast | Actor | Man in Dance Hall |
Rudy Germane | Cast | Actor | Concertgoer |
 Herschel Graham | Cast | Actor | Concertgoer |
Mary Jane French | Cast | Actress | Nightclub Patron |
Marion Gray | Cast | Concertgoer (uncredited) | |
| Person | Type | Job | Role(s) |
