Georges, hunted by the Germans, had taken refuge with his brother, Commissioner PJ Paris. Once released, he teams up for the sake of a girl with the lackluster Zattore. A bank is robbed, but the police is fast and Georges will either lose his life.

A person who had usurped the identity of a famous writer of detective stories was killed in the train. Why and by whom?

Claude, who temporarily replaces his father at the head of a department store, falls in love at first sight with a pretty female customer. He finds out that she is named Solange and that she is the goddaughter of Professor Hauteclerc, who runs a private psychiatric hospital. To come closer to the girl of his dreams, Claude has a crazy idea: he pretends to be mad so as to be placed in Hauteclerc's institution.

Monsieur Benoit's existence is transformed when his dour wife suddenly thinks in a bout of folly that she will become a chanteuse and her husband the impresario.

The knight Henri de Lagardère wants to avenge the death of his friend, the duke Philippe de Nevers assassinated by the prince de Gonzague, a few years before.

Paris, 1865. In a music-hall Manon accidentally kills her partner who was trying take sexual advantage of her. She is condemned to twenty years of hard labor first and then to be deported to marry a released convict. On the ship where she sails with her female fellow-sufferers she gets to know a young doctor and helps to suppress a revolt. Once arrived at her destination, Manon hesitates between her official fiancé and the doctor whose household she does not want to break...

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.

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.

Mimile is a street singer and also a very inventive free rider. With his friend Georges, a musician in the same orchestra, they meet Arlette Sicleton and Lulu. Arlette is the sister of Sicleton, a sports event organizer and Lulu is the daughter of Ledoux, the supervisor in charge of tracking down free riders. After many misunderstandings, love will triumph.

The adventurer Jeanne de Valois-Saint-Rémy, descendant (by the left hand) of the king of France Henri II, and who claims to be "Countess de la Motte", imagines a tortuous plan to steal a magnificent diamond necklace that the queen Marie-Antoinette refused to buy from the jewelers Boehmer and Bassange.