Pursued by the police, Saget usurps the identity of a man who was returning to his town after having made his fortune in the United States. Under this new name, he deceives his compatriots with the exception of a doctor and the savage Isabelle. During an explanation Saget understands that Isabelle secretly admires him. She denounces him and Saget surrenders without a fight. Thus he ruins all his prestige with the young Amazon.

An alcoholic doctor accidentally kills someone and manages to make the death look like an accident. The episode triggers a sense of confidence and he resolves to correct the miseries of his life.

A famous FBI agent's vacation is interrupted by murder. His investigation leads him on the trail of three women of the local upper middle class.

American FBI agent Lemmy Caution arrives in France to track down a dangerous spy.

A series of crimes is being perpetrated around a famous singer. Strangely, during each of the crimes, the artist's voice is heard humming his favorite song. Suspicions lead to a chase through a nocturnal Paris, ending in a disused theater where the assassin has lured his final victim.