Sister My Sister

In 1933 France, Christine works as a maid for the wealthy Madame Danzard and her teenage daughter Isabelle. Her younger sister Lea is also hired to work there, creating an uneasy dynamic with the two households. The Danzards view the sisters with condescension, setting the stage for a widening class divide.

The sisters and the Danzards become increasingly alienated, with sharp barriers between the classes. Privileges and gossip overshadow direct communication, and the household speaks through awkward glances rather than words. The mansion becomes a space of unspoken tension.

With limited outlets for intimacy, the sisters' relationship grows secretive and intimate, straining the already fragile family dynamics. Their bond becomes a source of danger and shame as they navigate trauma from their mother and the church. The Danzards remain oblivious, continuing to set the daily rhythm of the house.

Christine convinces Lea to stop giving their mother all their earnings, and the two sisters split the money for themselves. This severs a long-running relationship, and Lea's other ties with their mother unravel. The changes are noticed by Madame Danzard as their work begins to slip and they grow thinner and more tired.

Rumors swirl that Isabelle will marry and move out, intensifying Christine's paranoia that Lea might follow. Christine's fear of losing her sister to independence drives a new edge of possessiveness. Lea tries to reassure her, but the unease lingers as the household watches them closely.

Christine fears she is becoming a monster due to her anger, while Lea remains emotionally fragile but steadfast. The sisters rely on each other for emotional support amidst the stifling atmosphere. The Danzards' constant scrutiny amplifies their paranoia.

One day the iron blows a fuse and burns Isabelle’s blouse while Lea is preparing it. With money tight and time short, the moment heightens the tension in the house. The accidental mishap becomes a prelude to the violence that follows.

When the Danzards return from a shopping trip, Christine explains what happened to Isabelle's blouse. The widow claims she knows about the incestuous relationship between the sisters and warns they will never work in the household again if the rumors spread. The accusation deepens the sisters' rage and sense of entrapment.

In a burst of anger, the sisters savagely murder the widow and her daughter. The act is driven by fear of exposure and a desperate bid to reclaim control over their lives. The bloodshed closes the public cracks in their world and seals their fates.

The film closes on a crime report detailing the state of the corpses in the mansion. A knock sounds at the door as the report unfolds, suggesting the wider inquiry is about to begin. The sisters cling to each other while an investigator's questions play in the background, with Christine's screams for Lea piercing the scene.

Audio of an investigator questioning the sisters about the murder fills the scene, echoing the cold, procedural tone of the inquiry. Christine and Lea exchange frightened looks as the pressure of their crime builds. The sisters' bond is the only thing keeping them anchored as the truth edges closer.

The movie ends with the sisters' fates unclear, their screams fading into the whir of the investigation. The image of the closed mansion door remains while the truth of what happened lingers. The closing audio implies that the sisters may be condemned or perhaps still clinging to one another.