Someone is killing off nubile real estate agents. A psychologist doing a therapy talk show begins getting calls from the perpetrator, and cooperates with the police to try and stop him. Unfortunately, his lover is a real estate agent, and when it becomes clear that the madman is getting information for his kills from her discarded home listings, they both become endangered.

Roger Cobb is a author who has just separated from his wife. He moves into a new house and tries to work on a novel based on his experiences in the Vietnam War. Strange things start happening around him; little things at first, but as they become more frequent, Cobb becomes aware that the house resents his presence.

When a group of people from different walks of life converge in a Hungarian castle situated in Budapest which has been sealed for 500 years, they bring with them a werewolf which slowly begins to cut their numbers down.