A champagne tycoon's partner suspects his partner's gigolo husband of murders he's been framed for.
| Directing | Claude Chabrol | Director |
| Writing | Derek Prouse | Screenplay |
| Writing | Paul Gégauff | Screenplay |
| Sound | Guy Chichignoud | Sound Designer |
| Sound | Pierre Jansen | Original Music Composer |
| Costume & Make-Up | Maurice Albray | Costume Design |
| Editing | Jacques Gaillard | Editor |
| Production | Raymond Eger | Producer |
| Art | Rino Mondellini | Art Direction |
| Writing | Claude Brulé | Screenplay |
| Camera | Jean Rabier | Director of Photography |
| Writing | William Benjamin | Original Story |
| Production | Jacques Natteau | Associate Producer |
| Costume & Make-Up | Anatole Paris | Makeup Artist |
| Production | Pierre Cottance | Unit Manager |
| Production | Fred Surin | Production Manager |
| Directing | Vincent Gardair | Second Assistant Director |
| Directing | Pierre Gauchet | First Assistant Director |
| Art | Jacques Brizzio | Assistant Art Director |
| Sound | Guy Chichignoud | Sound Engineer |
| Camera | Paul Bonis | Assistant Camera |
| Camera | Claude Zidi | Camera Operator |
| Camera | Pierre Zucca | Still Photographer |
| Sound | André Jouve | Music Director |
| Directing | Denise Gaillard | Continuity |
| Art | Jean Fouchet | Title Designer |
