1882. When the creak of the garden gate one autumn afternoon sounds the arrival of an unexpected stranger, William Trenchard is puzzled, but not alarmed. He cannot possibly know the destruction this visitor will wreak on all he holds dear. The stranger is James Norton, who claims to be the man William's wife Constance was once engaged to, and who was reported to have committed suicide eleven years ago. Trenchard fears the loss of his wife's affections, but he is forced to plumb the depths of his own despair before the dark secrets of the Davenall family can finally - shockingly - be revealed...