Hélène and Aldo Giovanni are a circus trapeze double act and a couple. Aldo is temporarily replaced by former-partner Alexandre when the former is injured. The two get into a fight and the following day Alexandre is discovered dead. Hélène suspects her husband is responsible for the murder.

Cast: Michèle Morgan, Raf Vallone, Marthe Mercadier, Jean Gaven, Albert Duvaleix, Robert Dalban