EMANUELLE AND FRANCOISE

A young woman named Francoise, who is abused and degraded by her gambler-husband Carlo, eventually kills herself by jumping in front of a train. Her sister Emanuelle avenges Francoise's death by drugging Carlo and chaining him in a hidden soundproof room with a two-way mirror, and torturing him by having sex with various men and women in front of the mirror, making him watch the torrid goings on without being able to participate. She also injects him with LSD and causes him to hallucinate scenes of cannibalistic orgies. While he is still locked in the hidden room, Carlo also hallucinates hacking Emanuelle to death with a meat cleaver.

As the coup de grace of her plan, Emanuelle enters the room and attempts to castrate Carlo with a scalpel, at which point he breaks free of his bonds and chases her around the house. Carlo eventually catches Emanuelle and butchers her in real life on her living room rug, when suddenly the police arrive at the house, alerted to the melee by a neighbor. Carlo retreats back into the hidden room and seals himself in to evade the police while they check the crime scene for evidence and cart poor Emanuelle off to the morgue, not realizing the killer is hiding behind the two-way mirror in the living room. Emanuelle's real revenge over Carlo occurs after her death, when Carlo realizes he locked himself in the hidden room without any water or food and the police have locked up the house as a crime scene for 30 days.

Carlo escapes his bonds and kills Emanuelle, but then locks himself inside the hidden room without food or water, effectively sealing his fate after police arrive and secure the house.

The ending delivers a cycle of retribution where both perpetrator and avenger meet grim ends: Emanuelle's extreme tactics lead to her own death, but her plan outlasts her, dooming Carlo to a slow demise. The film underscores how revenge, when pushed to extremes, transforms both victim and oppressor and leaves no true victor.