 Tom and Karen are unhappy, planning to divorce after they sell their house. At work, a ruthless colleague is pushing Tom aside. At a bar, Jackie enchants him, and they begin an affair. She complains of an abusive husband, he complains of unfulfilled dreams. She suggests that each murder the other s spouse. When Karen drives her car off a bridge and no body is found, Jackie claims credit for murder and pushes Tom to do his share. He s appalled, but after her husband beats her again, Tom s resolve stiffens and he heads to her place; her husband s identity surprises him. Meanwhile, in the background, are a dutiful cop, a dogged insurance agent, and a neighbor in trouble.