Martinaud, an illustrious notary suspected of being the perpetrator of two horrendous crimes, voluntarily agrees to be questioned by Inspector Gallien on New Year's Eve. What initially is a routine procedure, soon becomes a harsh interrogation that seems to confirm the initial suspicions.
| Directing | Claude Miller | Director |
| Writing | John Wainwright | Novel |
| Production | Georges Dancigers | Producer |
| Production | Alexandre Mnouchkine | Producer |
| Sound | Georges Delerue | Original Music Composer |
| Camera | Bruno Nuytten | Director of Photography |
| Editing | Albert Jurgenson | Editor |
| Production | Margot Capelier | Casting |
| Art | Lâm Lê | Art Direction |
| Writing | Claude Miller | Writer |
| Writing | Jean Herman | Writer |
| Art | Eric Moulard | Production Design |
| Production | Raymond Leplont | Production Manager |
| Sound | Paul Lainé | Sound Director |
| Sound | Maurice Gilbert | Sound Mixer |
| Sound | Nadine Muse | Sound Editor |
| Writing | Michel Audiard | Dialogue |
| Directing | Jean-Pierre Vergne | First Assistant Director |
| Costume & Make-Up | Catherine Demesmeaker | Key Makeup Artist |
