Affluent New York couple Brad and Abby celebrate the arrival of newborn daughter Lily, unaware their highly intelligent and talented nine-year-old Joshua is becoming increasingly jealous of his sister. A series of bizarre occurrences leads Brad to suspect his son is simply acting out against his family - until events take a tragic turn. Horror, starring Sam Rockwell, Vera Farmiga and Celia Weston.

The arrival of a newborn girl causes the gradual disintegration of the Cairn family; particularly for 9-year-old Joshua, an eccentric boy whose proper upbringing and refined tastes both take a sinister turn.