More of a prequel than a sequel to "The Amityville Horror" (1979). Relates the story of the house's early years as a haven for demonic forces intent on driving a father to beat the kids, a mother to prayer, and a brother to lust after his sister (before he murders them all). Young etc. portray an obnoxious family that you're actually glad to see wasted by the possessed son. A stupid, clumsy attempt to cash in on the success of the first film, which was also stupid and clumsy but could at least claim novelty in the bad housing development genre. Followed by "Amityville 3: The Demon" in 1983.