Desc: Ronde de nuit: Directed by Jean-Claude Missiaen. With Gérard Lanvin, Eddy Mitchell, Françoise Arnoul, Raymond Pellegrin. With the help of journalist Diane Castelain, Parisian police inspectors Leo Gorce and Gu Arenas are trying to solve the murder of a member of the French Parliament, but some dangerous powerful people try to make sure that doesn't happen.