Diane is married to Julien, an architect. The two met in Czechoslovakia before marrying and moving to France. Julien becomes extremely jealous when he suspects Diane of having a lesbian affair with a ballet dancer. His incessant questions and insane jealousy make Diane resentful to the point she considers pushing him off a cliff.
| Actor | Role |
|---|---|
 Jeanne MoreauDiane Vallier | Diane Vallier |
 Charles DennerJulien Keller | Julien Keller |
 Elisabeth WienerBéatrice | Béatrice |
| JJoëlle LatourGeneviève | Geneviève |
 Henri-Jacques HuetMorel, the choreographer | Morel, the choreographer |
| MMarcela HusákováDancer | Dancer |
| LLibuše KrálováDancer | Dancer |
| JJames SparrowAgamemnon (uncredited) | Agamemnon (uncredited) |
| JJoan SettinDancer | Dancer |
| PPetr Zdeněk KoželuhDancer | Dancer |
| AAriane CortesseDancer | Dancer |
| LLidia Campo-LonghiDancer | Dancer |
| DDominique RobierDancer | Dancer |
| CCarolyne PageDancer | Dancer |
| JJaroslav KřížTheatre Manager | Theatre Manager |
| CClaudi NiubòTaxi Driver | Taxi Driver |
| MMilena JandováTranslator | Translator |
| JJaroslav KašparArchitect | Architect |
| SStanislav LiteraArchitect | Architect |
| OOlga BuzkováDancer | Dancer |
| MMarta CvejnováDancer | Dancer |
| SSilvia JarošováDancer | Dancer |
| RRozina KamburováDancer | Dancer |
| JJana KlocováDancer | Dancer |
 Věra KoželuhováDancer | Dancer |
| NNicole Helen NogaretDancer | Dancer |
| HHelena RichterováDancer | Dancer |
| ŠŠtěpánka ŘehákováDancer | Dancer |
| MMarkéta SodomkováDancer | Dancer |
| MMarta SynáčkováDancer | Dancer |