A musician witnesses the murder of a famous psychic, and then teams up with a fiesty reporter to find the killer while evading attempts on their lives by the unseen killer bent on keeping a dark secret buried.

A pair of psychotic hoodlums and an equally demented nymphomaniac woman terrorize two young girls on a train trip from Germany to Italy.

Beautiful young housewife Séverine Serizy cannot reconcile her masochistic fantasies with her everyday life alongside dutiful husband Pierre. When her lovestruck friend Henri mentions a secretive high-class brothel run by Madame Anais, Séverine begins to work there during the day under the name Belle de Jour. But when one of her clients grows possessive, she must try to go back to her normal life.