Murder in Amityville
Murder In Amityville is a book written by Hans Holzer and serves as a prequel to the 1977 novel The Amityville Horror. It has since been re-released under the title Amityville: Fact or Fiction? Plot summary 
The plot tries to explain why Ronald Defeo Jr. killed his family at 112 Ocean Ave. It revolves around Ronald Jr. as he experiences strange events in the house up until he kills his entire family on November 13, 1974. It goes on to explain that he was possessed and that he did not want to kill his family. It introduces controversial events. It is also based on Defeo's explanation of why he says he killed his family. Adaptations
The book was loosely used as the basis for the 1982 horror film Amityville II: The Possession. Holzer's theory that DeFeo was possessed is also used in 2005's The Amityville Horror and 2018's The Amityville Murders. A television special was filmed in 1979 with Holzer narrating and including interviews with DeFeo and medium Ethel Johnson-Meyers, but eventually was scrapped and never made public. The Amityville Horror
1979 American novels
American novels adapted into films
American horror novels