Le voleur de riens (1972)

In 1937, in Marseille, Louis-César is an antique dealer who admires Louis XVI and, like him, knows how to pick a lock. At night, he claims to go to a club and becomes a burglar who, for the sake of honesty, only robs trifle things like a rubber, glasses, etc. His sole challenge is to manage to pick the locks and to leave a card with his nickname "Sesame". One night, his wife Élise, that he calls Marie Antoinette, goes to bed but his daughter Annie admits that she found out about his activities and he reluctantly accepts to bring her along in M. Vinières's apartment. He manages to open a safe with a tiara inside. Annie tries it on. As they hear a car coming, they escape. Only when they return home do they realize that Annie still has the tiara on her head. He hides the tiara in an armor in his shop and decides to stop breaking in houses after he has returned it to its rightful owner. Annie flirts with a shy young customer called Jean-Pierre. When Louis-César returns to M. Vinières's apartment, he finds that he changed the lock to a burglar-proof one and he has to give up. He talks about his shop in a seedy bar to attract professional burglars. Jean-Pierre asks Annie if he can talk to her. She agrees to meet him at midnight. It is Jean-Pierre that arrives, and Louis-César offers him to put back the tiara and Annie goes with him to make sure that he does replace it. When Jean-Pierre opens the door, Annie says that she will not let herself fall in love with a thief. The next day, Jean-Pierre meets Louis-César in the shop and the latter offers him the money he promised in exchange for the deed. Jean-Pierre demands Annie's hand in marriage. Louis-César will not have it until his friends show him a newspaper article that claims Sesame returned the tiara, with a picture of Jean-Pierre Vinières.