Police Inspector Staniland is investigating the death of a pianist. While conducting his investigation and looking through the victim's apartment, he meets Barbara, the mistress of the murder victim. Barbara confesses to the crime, but Staniland, based on his observations and experience, does not believe her. He then sets out to find the truth.

Three erotic stories from classic writers Marguerite de Navarre, Nicolas Restif de la Bretonne and Guy de Maupassant.

Héléna Werner leads a reclusive and deserted life. Alone, as if withdrawn from the world in her apartment of refined luxury. She places an ad for a private secretary, a "handyman" who would take her away from the daily grind. As soon as he starts working, Milo adopts an intriguing behavior. From the start, he takes everything in hand and the doors of the apartment close on them both.