The Turn of the Screw - Henry James

The Turn of the Screw, James's great masterpiece of haunting atmosphere and unbearable tension, tells of a young governess sent to a country house to take charge of two orphans, Miles and Flora. Unsettled by a dark foreboding of menace within the house, she soon comes to believe that something, or someone, malevolent is stalking the children in her care. Is the threat to her young charges really a malign and ghostly presence, or a manifestation of something else entirely?