Newlyweds James Brolin and Margot Kidder (and Margot's 3 unappealing children) move into their big new home on Long Island. The house would have been way out of their price range, but a year before a young man had murdered the rest of his family in the house. This turns out to be a relevent detail, as creepy things start to happen, and it is clear something is going on, though not exactly what.
The Amityville Horror is one of my "neglected classics" efforts; I'd never seen it before and was expecting it to be more scary. It was creepy and atmospheric but not especially well acted (surprising given the cast) and I found the plot vague in places. Loved the setting, the evil-looking house, the rain, the music; was expecting more from the religious angle, which seemed to (heh) peter out. Not a bad film, but not a great one either.