Nicole Montigny leaves her husband, surgeon Paul, to live with her lover in Canada. Anna, her husband's assistant, thinks she can take advantage of the situation to console the man she loves. She convinces Nicole to fake an accident. However, Paul starts seeing his wife's twin sister, Mireille. Anna, mad with jealousy, brings Nicole back and tries to break up the new couple by blackmail. Nicole decides to eliminate Anna.
| Actor | Role |
|---|---|
 Nadine AlariNot listed | Not listed |
 Jean-Pierre KérienNot listed | Not listed |
 Micheline FranceyNot listed | Not listed |
 Paul DupuisNot listed | Not listed |
| RRobert ChandeauNot listed | Not listed |
| RRoger DesfossezNot listed | Not listed |
| MMax DharloNot listed | Not listed |
| CCécile EddyNot listed | Not listed |
| GGeorges GautronNot listed | Not listed |
 Philippe HersentNot listed | Not listed |
| RRaymond LoyerNot listed | Not listed |
 José QuaglioNot listed | Not listed |
| AAlain QuercyNot listed | Not listed |
| CCatherine RomaneNot listed | Not listed |
| GGérard SabatierNot listed | Not listed |
| JJacques RalfNot listed | Not listed |