Directed by
| Burgess Meredith | ||
| Irving Allen | ... | (general director) (uncredited) |
| Charles Laughton | ... | (completion director) (uncredited) |
Writing Credits
| Harry Brown | ... | (screenplay) |
| Georges Simenon | ... | (novel) |
Cast (in credits order) verified as complete
| Charles Laughton | ... | Inspector Jules Maigret | |
| Franchot Tone | ... | Johann Radek | |
| Burgess Meredith | ... | Joseph Heurtin | |
| Robert Hutton | ... | Bill Kirby | |
| Jean Wallace | ... | Edna Warren | |
| Patricia Roc | ... | Helen Kirby | |
| Belita | ... | Gisella Heurtin | |
 |
George Thorpe | ... | Comelieu |
| William Phipps | ... | Janvier | |
|
|
William Cottrell | ... | Moers |
| Chaz Chase | ... | Waiter | |
| Wilfrid Hyde-White | ... | Professor Grollet | |
| Rest of cast listed alphabetically: | |||
| Howard Vernon | ... | Inspector (uncredited) | |
Produced by
| Irving Allen | ... | producer |
| Franchot Tone | ... | producer |
Music by
| Michel Michelet | ||
Cinematography by
| Stanley Cortez | ... | director of photography |
Editing by
| Louis Sackin | ... | (as Louis H. Sackin) |
Art Direction by
| René Renoux | ||
Costume Design by
| Jacques Griffe | ... | (gowns: Miss Roc and Miss Wallace) |
| Robert Piguet | ... | (gowns: Miss Roc and Miss Wallace) |
Production Management
| A.D. Aguiar | ... | production manager |
| Henri Jaquillard | ... | production manager |
Second Unit Director or Assistant Director
| Mark Evans | ... | assistant director |
Sound Department
| J.S. Westmoreland | ... | sound recordist (as Josh Westmoreland) |
Camera and Electrical Department
| Tony Braun | ... | associate director of photography |
| Jean Bouvet | ... | assistant camera (uncredited) |
| André Germain | ... | camera operator (uncredited) |
Music Department
| C. Bakaleinikoff | ... | musical director |
Additional Crew
| Paulette | ... | hats: Miss Roc and Miss Wallace |
| Ruby Rosenberg | ... | assistant to producer |
