Sir Paul, a distinguished author, blinded in a horrific accident, advertises for an amanuensis, an assistant to help him with his writing. He employs the amiable Jane Ryder to be his eyes as he revisits scenes from his past and works on what he intends to be his final opus. Jane appears to be ideal: attractive, intelligent, unruffled by her employer's abrupt eccentricities. But, gradually, we come aware that Jane has another agenda. Incrementally, Sir Paul's familiar surroundings are altered. Strange things happen around the house and he becomes increasingly dependent on his new assistant. Jane plays increasingly sadistic games until their relationship breaks down...

Two extremely clever British men are in a game of trickery and deceit. Andrew Wyke, an aging famous author who lives alone in a high-tech mansion, after his wife Maggie has left him for a younger man; and Milo Tindle, an aspiring actor, equipped with charm and wit, who demonstrates both qualities once again. When Wyke invites Tindle to his mansion, Tindle seeks to convince the former into letting his wife go by signing the divorce paper. However, Wyke seems far more interested in playing mind games with his wife's new lover, and lures him into a series of actions he thoroughly planned in seeking revenge on his unfaithful spouse.