Woman in a Box 2 (1988)

A lonely ski resort manager seems to have an eerily strong impact on all the ladies around him. He is not notably handsome nor even particularly pleasant person, but for some inexplicable reason every female guest who enters his chalet seems to be willing to do whatever he wants, including having sex right next to their passed-out husbands. In fact, even his own sister-in-law can't resist his mystifying charms and quite literally throws herself at him. After a customer's husband in fatally injured in a skiing accident, he decides to make his move and proceeds to rape and kidnap the woman, imprisoning her in a wooden box located in his own personal torture dungeon.