Stéphane Blanchon lives a quiet life in Switzerland with his wife, Christine, until a young American boarder named Belle, who was living with them, is found murdered. Despite Stéphane's innocence, the evidence points to him, and he learns that Belle harbored romantic feelings for him. Suspicions mount against him; even Christine thinks he is the culprit. Stéphane's sanity begins to crumble, and he lashes out in unprecedented ways.
Jean Desailly
as Stéphane Blanchon
Alexandra Stewart
as Belle
Monique Mélinand
as Mrs. Monique Blanchon
Yvette Etiévant
as Alice
Jacques Monod
as Judge
Marc Cassot
as Commissioner
Jacques Pierre
as Philippe Berthe, Belle's Admirer
Yves Robert
as Bartender
Louisa Colpeyn
as Belle's Mother
Van Doude
as Doctor
Jacques Hilling
as Gendarme Cristever
George Cusin
as Monsieur Genet, college director
