In a quiet suburban town in the summer of 1958, two recently orphaned sisters are placed in the care of their mentally unstable Aunt Ruth. But Ruth's depraved sense of discipline will soon lead to unspeakable acts of abuse and torture that involve her young sons, the neighborhood children, and one 12-year-old boy whose life will be changed forever.

Six years after Michael Myers last terrorized Haddonfield, he returns there in pursuit of his niece, Jamie Lloyd, who has escaped with her newborn child, for which Michael and a mysterious cult have sinister plans.

Darcy Wagner and her ten-and-a-half-year-old daughter Pamela "Pammy" are heading to the bed and breakfast of her boyfriend Peter Campbell in the River Bend Road in Northern California. Peter has quited his career of doctor and bought an old house to have a calmer life and write a book. When Darcy stops at a gas station to ask for direction, she has an abusive treatment from the owners, the Hammond Brothers. Meanwhile Peter welcomes his first guest, the student Stephanie "Star" Roberts, while he works with his friend Bobby Boulet repairing the house. When Darcy and Pamela arrive, he explains that he had a dispute in the justice with the Hammond Brothers and asks Darcy to forget the incident. Soon Pamela befriends the girl Emma in the barn and she tells that the house belonged to the Tooth Fairy Witch that killed many children to get their milk-teeth; further, Pamela would be in danger since she still has her last milk-tooth. Pamela tells Emma's story to her mother and Peter, but they do not believe in her. But when their friends are slaughtered in the house, Darcy and Peter start to believe that something supernatural is happening in the house.

One whole year before the Lutzes' arrival in Amityville, at the infamous house on 112 Ocean Avenue portrayed in The Amityville Horror (1979), the eldest son of Ronald and Louise DeFeo--the troubled twenty-three-year-old, Ronald "Butch" DeFeo Jr.--grabbed a powerful .35 calibre lever-action rifle, and executed his parents and his four unsuspecting siblings in their sleep. Claiming that indefatigable and penetrating "voices" compelled him to perform the atrocious deed, DeFeo Jr. was found guilty on six counts of second-degree murder and, until now, he remains in the maximum-security Sullivan Correctional Facility, New York. However, a thick mystery shrouds the gruesome findings of the police. Did Ronald, indeed, plant the seeds of evil in the notorious Amityville House?

Pregnant with director Roman Polanski's child and awaiting his return from Europe, 26-year-old Hollywood actress Sharon Tate becomes plagued by visions of her imminent death.