Francis Lopez

Returning from South America, a singer is hired by an old pal who runs a detective agency to use a perch as a night club performer to be an investigator.The amateur sleuth then falls for a girl whose brother is a jewel thief.

Manuel, a landowner in Jamaica, arrives in Paris on vacation. There he meets Olivia, a Spanish popular singer and falls in love. Olivia leaves Paris to play in a casino of the Riviera and Manuel follows her there. Maxime lives in Cannes, uncle of Olivia, a trickster who poses as a magician and has great influence on Annie, an eccentric billionaire. At the same time, Simeon, Annie's secretary tries to bribe the magician to influence Annie to accept to marry him, but as Maxime also wants to marry her, Simeon uses the services of a private detective. Manuel receives a telegram asking him to return to Jamaica. So, Annie proposes them a cruise aboard his yacht and invites Olivia.

A dozen elegant people are gathered in a writer's desirable mansion. In the grand tradition of Agatha Christie, they all have something to hide.They begin a cruel game of truth, a game where you're not supposed to tell lies. As the questions become more and more intimate and precise, the tempers rise, while outside the storm is raging. Enter a hateful person (played by Paul Meurisse, the nasty headmaster in "Les Diaboliques") who seems to know a lot about them. Someone is murdered. Whodunit?

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