|Lucienne Bogaert||Mme. D|
|Yvette Étiévant||La bonne (uncredited)|
|Bernard La Jarrige|
Socialite Helene is shocked when her lover, Jean, says he wants to end their relationship. Helene conceals her anguish and callously begins plotting revenge. She then meets the beautiful Agnes, an ex-prostitute, and decides to introduce her to Jean. As he and Agnes fall in love, Helene dutifully conceals the young woman's dark secrets -- that is, until Jean marries Agnes, and Helene coldly decides to break the news.