| Person | Type | Job | Role(s) |
|---|---|---|---|
 Adele Parmenter | Crew | Costume & Make-Up | Costume Design |
 Agatha Christie | Crew | Writing | Novel, Story |
Alexandre Trauner | Crew | Art | Production Design, Art Direction |
Arthur Hornblow Jr. | Crew | Production | Producer |
 Billy Wilder | Crew | Directing | Director, Screenplay |
 Charles Gemora | Crew | Costume & Make-Up | Makeup Artist |
 Daniel Mandell | Crew | Editing | Editor |
Doane Harrison | Crew | Production | Production Assistant |
 Edith Head | Crew | Costume & Make-Up | Costume Design |
Edward Small | Crew | Production | Executive Producer, Presenter |
Emmett Emerson | Crew | Directing | Assistant Director |
 Ernest Gold | Crew | Sound | Conductor |
Fred Lau | Crew | Sound | Sound |
Gustaf Norin | Crew | Costume & Make-Up | Makeup Artist |
 Harry Kurnitz | Crew | Writing | Screenplay |
Harry Ray | Crew | Costume & Make-Up | Makeup Artist |
Helene Parrish | Crew | Costume & Make-Up | Hairdresser |
Howard Bristol | Crew | Art | Set Decoration |
Joe King | Crew | Costume & Make-Up | Costume Design |
John Franco | Crew | Directing | Script Supervisor |
 Lawrence B. Marcus | Crew | Writing | Adaptation |
Lee Zavitz | Crew | Crew | Special Effects |
Leonid Raab | Crew | Sound | Music Arranger |
Matty Malneck | Crew | Sound | Original Music Composer |
Nellie Manley | Crew | Costume & Make-Up | Hairdresser |
 Noël Coward | Crew | Writing | Dialogue |
 Russell Harlan | Crew | Camera | Director of Photography |
 Wally Westmore | Crew | Costume & Make-Up | Makeup Artist |
Ben Hersh | Crew | Production | Production Supervisor |
Madison S. Lacy | Crew | Camera | Still Photographer |
William Maybery | Crew | Production | Casting |
Stanley Detlie | Crew | Art | Property Master |
Ray Sebastian | Crew | Costume & Make-Up | Makeup Artist |
Frank Losee | Crew | Directing | Second Assistant Director |
Bert Steiner | Crew | Writing | Dialogue |
Art Howard | Cast | Courtroom Spectator (uncredited) | |
 Arthur Tovey | Cast | Actor | Courtroom Spectator (uncredited) |
 Ben Wright | Cast | Actor | Barrister Reading Charges (uncredited) |
 Bert Stevens | Cast | Actor | Courtroom Spectator (uncredited) |
 Bess Flowers | Cast | Actress | Courtroom spectator (uncredited) |
Brandon Beach | Cast | Actor | Juror (uncredited) |
 Cap Somers | Cast | Actor | Courtroom Spectator (uncredited) |
 Charles Laughton | Cast | Actor | Sir Wilfrid |
 Colin Kenny | Cast | Actor | Juror (uncredited) |
 Danny Borzage | Cast | Actor | Courtroom Spectator (uncredited) |
 Eddie Baker | Cast | Actor | Courtroom Spectator (uncredited) |
 Elsa Lanchester | Cast | Actress | Miss Plimsoll |
 Francis Compton | Cast | Actor | Judge |
 Frank McLure | Cast | Actor | Court Officer (uncredited) |
 Franklyn Farnum | Cast | Actor | Barrister (uncredited) |
Fred Rapport | Cast | Actor | Juror (uncredited) |
George Bruggeman | Cast | Actor | Courtroom Spectator (uncredited) |
 George Calliga | Cast | Actor | Courtroom Spectator (uncredited) |
George Pelling | Cast | Actor | Bit Part (uncredited) |
Glen Walters | Cast | Actress | Courtroom Spectator (uncredited) |
Harry Denny | Cast | Juror (uncredited) | |
 Helen Dickson | Cast | Actress | Courtroom Spectator (uncredited) |
 Henry Daniell | Cast | Actor | Mayhew |
 Ian Wolfe | Cast | Actor | Carter |
 J. Pat O'Malley | Cast | Actor | Shorts Salesman (uncredited) |
 Jack Raine | Cast | Actor | Doctor (uncredited) |
Jeanne Lafayette | Cast | Courtroom Spectator (uncredited) | |
 Jeffrey Sayre | Cast | Actor | Clerk at Old Bailey (uncredited) |
Joe Gilbert | Cast | Actor | Courtroom Spectator (uncredited) |
John Roy | Cast | Actor | Courtroom Spectator (uncredited) |
 John Williams | Cast | Actor | Brogan-Moore |
 Leoda Richards | Cast | Actress | Hat Store Sales Clerk (uncredited) |
 Marjorie Eaton | Cast | Actress | Miss O'Brien (uncredited) |
 Marlene Dietrich | Cast | Actress | Christine |
 Michael Jeffers | Cast | Actor | Cafe Patron (uncredited) |
 Minta Durfee | Cast | Actress | Courtroom Spectator (uncredited) |
 Norbert Schiller | Cast | Actor | Spotlight Operator in German Cafe (uncredited) |
 Norma Varden | Cast | Actress | Mrs. French |
Oliver Cross | Cast | Actor | Courtroom Spectator (uncredited) |
 Ottola Nesmith | Cast | Actress | Miss Johnson (uncredited) |
Patrick Aherne | Cast | Actor | Court Officer (uncredited) |
 Paul Kruger | Cast | Actor | Courtroom Spectator (uncredited) |
 Philip Tonge | Cast | Actor | Inspector Hearne |
 Ruta Lee | Cast | Actress | Diana |
 Scott Seaton | Cast | Actor | Courtroom Spectator (uncredited) |
 Steve Carruthers | Cast | Actor | Barrister (uncredited) |
 Stuart Hall | Cast | Actor | Courtroom Spectator (uncredited) |
Tex Brodus | Cast | Courtroom Spectator (uncredited) | |
 Torin Thatcher | Cast | Actor | Mr. Myers |
 Tyrone Power | Cast | Actor | Leonard Vole |
 Una O'Connor | Cast | Actress | Janet |
Walter Bacon | Cast | Actor | Bar Patron (uncredited) |
 Wilbur Mack | Cast | Actor | Courtroom Spectator (uncredited) |
 William H. O'Brien | Cast | Actor | Barrister (uncredited) |
Waclaw Rekwart | Cast | Actor | Courtroom Spectator (uncredited) |
 Herschel Graham | Cast | Actor | Courtroom Spectator (uncredited) |
John Barton | Cast | Actor | Courtroom Spectator (uncredited) |
Albert Cavens | Cast | Courtroom Spectator (uncredited) | |
 George Blagoi | Cast | Actor | Juror (uncredited) |
Benjie Bancroft | Cast | Courtroom Spectator (uncredited) | |
Arline Bletcher | Cast | Courtroom Spectator (uncredited) | |
Marion Gray | Cast | Courtroom Spectator (uncredited) | |
Don Ames | Cast | Actor | Bar Patron (uncredited) |
Edna Smith | Cast | Actress | Courtroom Spectator (uncredited) |
| Person | Type | Job | Role(s) |
