Robert Sauvion

Lydia (Danielle Darrieux) is a student, poor and orphaned, who pretends to be the daughter of a famous writer.

Nick, a Parisian businessman, divorces his rich American wife, marries his new secretary Marie, but is prevented from success in France so travels without his wife to an African outpost. He tells his young assistant Gilbert about his wife. When Gilbert takes sick and returns to Paris, he begins to fall in love with Marie.

Grey, an elite detective, has the mission to investigate the assassination, in Paris, of a great Hollywood star. There is no real motive, and yet the suspects are numerous. The investigation promises to be long and difficult.

Two journalists from different papers are looking for the same story. They want to know, who a group of gangsters getting young women from Europe to South America, where they are forced to work in brothels. But the gangsters have their own battels against each over, so the journalists can escape the danger, in which they've brought themselves.