An industrialist's affair with a troubled woman entangles him in a dangerous situation with her abusive boyfriend. His glamorous life spirals into unexpected peril.
| Actor | Role |
|---|---|
 Carroll BakerNicole Perrier | Nicole Perrier |
 Jean-Louis TrintignantJean Reynaud | Jean Reynaud |
 Erika BlancDanielle Reynaud | Danielle Reynaud |
 Horst FrankKlaus | Klaus |
 Helga LinéHelene Valmont | Helene Valmont |
 Ermelinda De FeliceHotel Proprietor | Hotel Proprietor |
 Giovanni Di BenedettoMonsieur Valmont | Monsieur Valmont |
| IIrio FantiniParty Guest | Party Guest |
 Dario MichaelisPolice Commissioner | Police Commissioner |
 Renato PinciroliPorter | Porter |
 Gianni PulonePress Photographer | Press Photographer |
| LLucio RamaParty Guest | Party Guest |
| PPaola ScalziHelene's Friend | Helene's Friend |
| LLuigi SportelliParty Guest | Party Guest |
 Beryl CunninghamBlack Stripper | Black Stripper |
 Marcello Bonini OlasParty Guest (uncredited) | Party Guest (uncredited) |
 Alessandro TedeschiUomo Della Commissione (uncredited) | Uomo Della Commissione (uncredited) |