A woman, concerned by her husband's eccentric behavior, hires a detective to follow his every move -- which yields unexpected results.
| Actor | Role |
|---|---|
 Ornella MutiCécile Costes | Cécile Costes |
 Valérie MairesseClaire | Claire |
 Catherine FrotJeanne | Jeanne |
 Dominique BlancAgnès | Agnès |
 François MorelAlain | Alain |
 Gilbert MelkiPascal | Pascal |
 Lucas BelvauxPierre | Pierre |
 Jean-Baptiste MontagutHenri | Henri |