In the late 1950s, British police officer Tony Aaron resigns from the force after sleeping with Hazel, wife of the man whose house he was supposed to guard. In his new job as a fake private investigator, he helps couples get divorces by photographing Hazel having "affairs" with the husband. When she is murdered during a job, Tony begins having an affair with the dead man's mistress, Angeline, while trying to prove his innocence.
After tinkering with a box he bought while abroad, sexual deviant Frank inadvertently opens a portal to hell, where fetish-demons led by Pinhead tear his body apart. When Frank’s brother and his wife move into his house, a skeletal Frank appears to his sister-in-law and asks her to supply him with corpses for his regeneration.
Jane is young, French, pregnant and unmarried. Bucking convention, she is uninterested in settling with her baby's father or getting an abortion. After renting a room in a dingy London boarding house, Jane befriends the odd group of inhabitants and starts an affair with one boarder, Toby. As Jane's pregnancy threatens her new relationship, and the reality of single motherhood approaches, she is forced to decide what to do about both her baby and her budding romance.