The Conspiracy of Torture (movie, 1969)

In 1599 Italy, Beatrice Cenci is the teenage daughter of the crazed landowner and nobleman Francesco Cenci who keeps his daughter locked up in the dungeon of his castle and sexually abuses her as well. Beatrice then plots with her stepmother, her besotted servant Olimpio, as well as a local bandit, named Catalano, to plan Francesco’s murder.