 | Stéphane Audran als Hélène Davile, aka 'Mlle Hélène' |
 | Jean Yanne als Paul Thomas, aka 'Popaul' |
 | Roger Rudel als Commissioner Grumbach |
 | Antonio Passalia als Angelo |
 | Mario Beccara als Léon Hamel |
| William Guérault als Charles |
| Pascal Ferone als Father Charpy |
| Jacques Gaillard | Editor |
| Jean Rabier | Director of Photography |
| Claude Chabrol | Director |
| Claude Chabrol | Screenplay |
| Pierre Jansen | Original Music Composer |
| Joseph Poulard | Costume Design |
| André Génovès | Producer |
| Fred Surin | Production Director |
| Guy Chichignoud | Sound |
| Claude Zidi | Camera Operator |
| Guy Littaye | Production Design |
| Louis Bonnemaison | Makeup Artist |
