Certain that he buried his wife alive and that Elizabeth has now returned from the dead to exact her revenge, Nicholas goes in search of her, winding up down in the crypt where he sees her rising from a coffin. In an attempt to escape her, Nicholas falls down the stone steps into the torture chamber. Meanwhile, Catherine, Francis, Doctor Leon have noticed that Nicholas is missing and have gone in search of him. It is Leon who finds both Nicholas and Elizabeth in the torture chamber, Nicholas lying on the floor, obviously driven insane. Leon attempts to bring Nicholas out of it. When Nicholas doesn't respond, Leon and Elizabeth gloat over the success of their plan to drive him insane. Thinking that Nicholas is catatonic, Elizabeth taunts him with the similarities between their situation and that of Nicholas' parents, his father Sebastian having caught his mother Isabella committing adultery with his uncle Bartolome, leading Sebastian, the chief Inquisitor, to torture them and to bury Isabella alive. Nicholas suddenly awakens from his stupor and laughs, but he is no longer Nicholas. He has taken on the personality of Sebastian. After locking Elizabeth in an iron maiden, he goes looking for Leon, but Leon has fallen into the pit. At that moment, Francis comes down the stairs looking for Nicholas. In his madness, Nicholas mistakes Francis for Leon, knocks him out, and ties him to a platform directly beneath the swinging, razor-sharp pendulum. As the pendulum swings lower and lower, Catherine comes downstairs and hears the mechanism working. She fetches the servant Maximilian, and they break down the door into the torture chamber. Nicholas tries to knock out Maximilian but falls into the pit. Just in the nick of time, they are able to reverse the pendulum and free Francis. In the final scene, Catherine, Francis, and Maximilian exit the torture chamber, locking the door behind him. Just before the door closes, Catherine says, "No one will ever enter this room again." The camera pans to the iron maiden, where Elizabeth still sits, bound and gagged, only her eyes showing the terror for the hell that she knows awaits her.