The Turn of the Screw.

A remote English country house, and old and faithful housekeeper, two young orphan children and an eager new governess sent down from London to look after them. But all is not quite as it seems in the sheltered world of Bly. Britten's brilliantly scored, insidiously compelling adaptation of Henry James's novella takes its themes of of childish innocence and adult corruption, then twists and turns them to disturbing and ultimately devastating effect.