YMMV / The House with Laughing Windows

• Complete Monster: Buono Legnani's incestuous sisters would lure unknowing victims to the titular house in order to torture and kill them as an inspiration for their brother's art. After Buono's suicide, the two sisters kept on murdering people in a twisted homage to him and also so satisfy their own sadism. When Stefano reaches the town to work on one of Buono's frescoes, the sisters—one of whom is under the guise of Don Orsi—spy on him and kill four people who help him unveil the mystery, explicitly torturing two of them beforehand and taking advantage of the wall of silence in the town to cover up their crimes. In the end, it's implied that they also manage to kill Stefano shortly before being arrested.