Prosecutor Vadim, who has an uneasy relationship with his glamorous wife Chanéac, vanishes at the time a psycho is offing club girls to the strains of the "Tu es si jolie ce soir" song.
| Actor | Role |
|---|---|
 Delphine ChanéacDeborah | Deborah |
 Thierry NeuvicJoe | Joe |
 Lionel AbelanskiPierre | Pierre |
 Lola DewaereBarbara | Barbara |
 Christian VadimSteve | Steve |
 François VincentelliErwan | Erwan |
 Jean-Pierre MockyAgent Willy | Agent Willy |
 Laurent BirasArtie Lieber | Artie Lieber |
 Eloïse ChatillonSally Vattès | Sally Vattès |
 Andrée DamantMme Dillman | Mme Dillman |
| PPrescilla AndreaniTonia Lee | Tonia Lee |
 Paméla RavassardJeanne | Jeanne |
 Hélène BizotEmilie | Emilie |
 Françoise MichaudAgent immobilier | Agent immobilier |
| JJean-Pierre Le CloarecPatron Blue Note | Patron Blue Note |
| RRaphaël ScheerInspecteur Couque | Inspecteur Couque |
 Sarah-Laure EstragnatLinda | Linda |
| MMarion DumasBelle | Belle |
 Fabrice de la VillehervéHank | Hank |
| CChristophe LagueInspecteur Dulin (uncredited) | Inspecteur Dulin (uncredited) |
 Tex(uncredited) | (uncredited) |
| CCécile Maldonado(uncredited) | (uncredited) |