Trailer
Images
 | Erich von Stroheim as Professor Winckler |
 | Louis Jouvet as Commissioner Calas |
 | Jany Holt as Hélène Ardouin |
 | Albert Préjean as André Laurent |
 | Véra Flory as Barmaid |
 | Foun-Sen as Winckler's assistant |
| Génia Vaury as Barmaid |
 | Made Siamé as Calas's secretary |
 | Roger Blin as Kretz, Winckler's henchman |
 | Philippe Richard as John Gordon |
 | Jean Témerson as Jojo, Dany's friend |
 | Maurice Baquet as Gérard |
 | Pierre Labry as First inspector |
 | Max Dalban as Second inspector |
 | Florence Marly as Gordon's Mistress |
 | Margo Lion as Dany |
| Bobby Martin as Jazz conductor |
| Thelma Minor as Singer of the orchestra |
| Directing | |
| Pierre Chenal | Director |
Writing | |
| Marcel Achard | Writer |
Production | |
| Fritz Bukofzer | Producer |
Art | |
| Eugène Lourié | Production Design |
Camera | |
| Theodore J. Pahle | Director of Photography |
Art | |
| Serge Piménoff | Production Design |
Sound | |
| Igor B. Kalinovski | Sound |
Editing | |
| Gustaf Heidenheim | Editor |
Costume & Make-Up | |
| Pierre Pierromax | Makeup Artist |
Sound | |
| Roger Desormière | Conductor |
