‘Amityville Horror’ 50 years later — a look at the ‘most haunted house in the world’ decades after grisly killings

nypost.com:

that house.The five-bed, four-bath Dutch Colonial on Ocean Avenue in Amityville was the site of one of New York’s most infamous mass murders, when a young man shot all six members of his family as they slept with a .35-caliber Marlin rifle, one by one.

The bloodshed wrought by Ronald DeFeo Jr. the morning of Nov. 13, 1974 was straight out of a horror movie, and eventually became one: the 1979 classic “The Amityville Horror” starring Margot Kidder and James Brolin as a couple who buy and move into the empty house after the murders only to meet a demonic presence.

DeFeo, then 23, was a heavy drug user known as “Butch.” Over the years he blamed everything from voices in his head, to hired killers, to his own sister, for the massacre.

He was sentenced to six terms of 25 years to life for killing his parents, Ronald and Louise; his two sisters, Dawn, 18, and Alison 13; and his two brothers, Marc, 12, and John, 9.