When schoolteacher Ben unearths an old door knocker in the garden of his new home, the curator suggests it may come from the now-demolished house, reputed to be haunted. Ben prompts the curator to tell him two stories about the house's past. Back in the present day, commitment-shy Ben begins to discover that, though demolished, Geap Manor casts a long shadow. Having recently left his girlfriend Hannah for a life of excitement over cosy domesticity, he is excited by the curator's stories and screws the ancient door knocker to his new front door. However, he soon finds himself getting more excitement than he bargained for as the past begins to intrude rudely with a loud knock at the door in the night and a terrifying journey into Geap Manor's bloody past.