Answer:
The book and movie are based on supposed events that took place on Long Island in the 1970's. The murdering of the DeFeo family is indeed real. Ronnie DeFeo is in prison for killing his entire family in their Amityville home on Long Island. The Lutz's bought the home afterwards and claim supernatural occurrences had taken place there. However there is no proof.
First answer by ID1165639226. Last edit by ID0000000000. Question popularity: 1 [recommend question].