Psycho House (sometimes referred to as Psycho House: Psycho III) is a 1990 horror novel by American writer Robert Bloch. It is a sequel to the 1959 novel Psycho and the 1982 novel Psycho II. The novel is not related to the 1986 film Psycho III or the 1990 film Psycho IV: The Beginning.

Plot summary

Ten years after Norman Bates' death, a local entrepreneur has rebuilt the Bates Motel in Fairvale as a tourist attraction. Amy Haines travels to the infamous "Psycho House" to write a book about Bates when mysterious murders begin to occur. Haines faces resistance from the community when she enlists the help of a group to investigate the murders.