The Diary of a Chambermaid

Joseph kills Captain Mauger because he is caught red-handed while burglarizing the captain's house. When Mauger returns unexpectedly and discovers Joseph stealing his hidden money, Joseph is trapped with no way to escape without eliminating the only witness. He murders Mauger to get away with the stolen funds and continue his plan to run away with Celestine.

Earlier, Joseph tells Celestine he needs to 'take care of' Mauger if he's discovered, hinting at his willingness to commit violence.

Madame Lanlaire offers the silverware to Joseph as a bribe to get him to leave the estate. She has discovered that her son Georges has fallen in love with Celestine and wants Joseph out of the picture so Georges can have her. By offering the valuable silverware, Madame Lanlaire removes both Joseph and Celestine from the household while securing what she believes is a better match for her son.

Madame Lanlaire earlier dressed Celestine in fine clothes and had her tend to Georges, revealing her willingness to use Celestine to keep her son at home.

Celestine chooses Georges after Joseph is killed in their confrontation on the road. Though she initially planned to flee with Joseph, their escape is delayed by Bastille Day crowds, allowing Georges to catch up. During the struggle between Joseph and Georges, Joseph is killed, which removes her criminal accomplice and leaves Georges as the only viable option. Her final choice represents a shift from calculated ambition to accepting genuine affection.

Celestine shows hesitation about Joseph's criminal plans throughout, suggesting her commitment to him was always conditional.

Celestine agrees to help Joseph steal the silverware because she has already decided to leave the Lanlaire estate after being disillusioned by Madame Lanlaire's manipulation. Joseph persuades her that stealing the silverware would give them enough money to start a new life together. Though she initially quits intending to leave, the promise of financial security and a fresh start makes her complicit in his criminal scheme.

Celestine's earlier decision to quit after being used by Madame Lanlaire shows her willingness to abandon her current situation for something better.

Joseph is killed during a confrontation with Georges on the road. After stealing from Captain Mauger and planning to flee with Celestine, Joseph is delayed by Bastille Day celebrations in the village. Georges catches up to them, and in the struggle that follows, Joseph is killed. This clears the way for Georges to pursue Celestine without competition.

Joseph's criminal escalation throughout the film, including murder, builds toward this violent confrontation as an inevitable consequence.

Madame Lanlaire overhears Joseph and Celestine discussing the plan to steal the Lanlaire silverware on Bastille Day. Rather than let her household be robbed, she takes action to prevent the theft, forcing Joseph to change his plans. This forces Joseph to target Captain Mauger instead, which ultimately leads to murder and sets the tragic events in motion.

Madame Lanlaire is established as a vigilant and manipulative presence who monitors everyone in her household.

Bastille Day serves as the critical timing for Joseph's theft. The holiday provides cover for his crime because most people, including Captain Mauger, are away celebrating in the village. However, the same celebrations create crowds that delay Celestine and Joseph's escape, allowing Georges to catch up to them. The dual nature of the holiday, enabling the crime while also causing the delays that lead to tragedy, makes it a pivotal narrative device.

The timeline builds toward Bastille Day as the moment when Joseph's plans will come to fruition.

Madame Lanlaire wants to keep her son Georges at the estate because he is sickly and may not live long. She believes that if Georges marries Celestine and settles down at home, he will remain nearby rather than returning to Paris. By having Celestine dress attractively and tend to his needs, Madame Lanlaire hopes to create a romantic attachment that will anchor Georges to the family home.

Georges' fragile health is established early, showing why his mother is desperate to keep him near.

Captain Mauger becomes obsessed with Celestine and offers to marry her as a path to wealth. Since he is a neighbor with means, Mauger believes having Celestine live with him would fulfill his desires. His proposal is less about romance and more about acquiring her as a possession, with marriage serving as the means to bring her into his household.

Mauger's fixation on having Celestine 'under his roof' establishes his possessive motivation.

Celestine quits because she realizes she has been manipulated as a pawn in Madame Lanlaire's scheme to keep Georges at home. She is ordered to bring broth to Georges' room and dressed up to attract him, but she sees through this manipulation and decides she wants no part of it. Her quitting represents her first assertion of independence, though she soon becomes entangled in Joseph's criminal plans instead.

Celestine is established as ambitious and aware of social dynamics, making her unwilling to be used as a mere tool.

Celestine and Georges flee the estate together, but the ending is ambiguous and bittersweet. They escape the manipulative household and its scheming, but this freedom comes after two deaths, Captain Mauger and Joseph, and is tempered by the moral weight of their departure. The 'uncertain horizon' suggests their future is precarious, representing a compromised form of liberation rather than true happiness.

The film's tone is established as dark comedy with a bittersweet ending, setting expectations for this ambiguous conclusion.