The Passion of Slow Fire(1961)
StƩphane 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 StƩphane'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. StƩphane's sanity begins to crumble, and he lashes out in unprecedented ways.