Jack converts a room in his house into a kind of erotic torture chamber equipped with beds to which women can be strapped and held helpless and which is soundproofed to make their screams unheard. Other equipment includes cords and pulleys, flagellation implements and a mechanical Chair of Treachery to which helpless females are lured to be restrained in. Jack lures women he knows into this room and takes considerable pride in meticulously planned sadomasochistic activities which he describes in minute detail.