client of Mary's fails to show one night, Paul leaves to buy groceries and a new frying pan, since Mary is squeamish about cooking in the one they use to kill people. While Mary is alone, the client arrives late and tries to rape her. Raoul drops by and strangles the client to death. He offers Mary a joint and they have sex. After Paul grows suspicious, he follows Raoul and discovers he has been selling the victims' bodies to a dog food company, selling their expensive cars, and secretly keeping the money. Raoul tries to persuade Mary to run away with him after they have sex again. He nearly runs down Paul with a car, so Paul hires Doris the Dominatrix to use her costuming and role-playing skills to get rid of him. She poses as an immigration agent threatening Raoul, a Mexican immigrant, with deportation. She pretends to be a public health worker who diagnoses him with venereal disease. The pills she promises will cure him are actually saltpeter tablets which render him impotent. These schemes fail to deter Raoul's interest in Mary. The Blands fear they will lose the property they wish to buy for the restaurant to another buyer. To quickly earn more cash, they attend a swingers party in search of victims. Mr. Leech, a bank lender who earlier refused to loan Mary money after she rejected his sexual advances, sees her at the party and propositions her. Mary kills him with a rattail comb and throws his body from a window. While Paul and Mary try to retrieve Mr. Leech's possessions, the party's host demands they join the nude guests in the hot tub or leave. Paul loses his temper and hurls an electric space heater into the hot tub, killing all of the partygoers and enabling him and Mary to take their money and sell their cars. A drunken Raoul breaks into the Blands' apartment and threatens to kill Paul for not sharing the money earned from the swingers' cars. He announces that he intends to wed Mary and tells her to kill Paul with the frying pan. Instead, Mary lures Raoul into the kitchen and murders him. Mary confesses her affair with Raoul to Paul, who tells her that he already knows. The Blands suddenly remember that James, the real estate agent who is helping them buy the property for the restaurant,