Jack Olson, a real estate agent, comes home from a business trip and discovers his family has been gruesomely murdered. To his surprise, his wife, Maggie, still alive, hanging from a wooden beam in the attic, utters a word to her husband before dying, and then the police arrive. Jack is arrested for the vicious crimes. Years go by, and a new family moves into the vacant house. Detective Josh Hall, who was on the scene of the murders, keeps a watchful eye on them as he is concerned about what sinister forces inhabit the home and will the new family be next...?