Rich industrialist Jacques Decret learns his wife Gloria is having an affair with a young actor. For revenge, he bombards her with anonymous letters, convincing her that her lover is the culprit while Gloria desperately seeks a way out.
Gloria Decrey
Jeanne Moreau
Jacques Decrey
Gérard Oury
Yves Normand
Philippe Nicaud
Ghislaine
Claire Maurier
Mario
Gérard Buhr
Police commissioner
George Cusin
Police inspector
Robert Bazil
Le bijoutier
Jean Degrave
Jeweler
Richard Francœur
Guest of the Decreys
Françoise Honorat
Secretary
Joëlle Janin
Me Lombard, lawyer
Robert Le Béal
Marguerite Lorne
Postwoman
Micheline Luccioni
Jacques Mancier
Suzanne Martichoux
Jérôme
Pascal Mazzotti
Barmaid
Jacqueline Noëlle
Henri
Philippe Olive
Aurore Chabrol
Chantal de Rieux
Paul
Jean-Marie Rivière
Mauvin
Jean Lefebvre
Josiane Mauvin
Colette Renard
Minister (uncredited)
Jean Michaud
Concierge (uncredited)
Albert Michel
Priest (uncredited)
René Berthier