'Haunting, heartbreaking, quietly terrifying. Unforgettable' CHRIS WHITAKERThree of them adrift on the narrowboat.Mother, son, and wickedness.Peggy Jenkins and her teenage son, Samson, live on a remote stretch of canal in the Midlands. She is a writer and he is a schoolboy. Together, they battle against the hardness and manipulation of the man they live with. To the outside world he is a husband and father. To them, he is a captor.Their lives are tightly controlled; if any perceived threat appea...