When a doctor from the infirmary tells thief-taker Simon Westow about the brutal deaths of two young boys at the hands of a mill overseer, Simon's painful memories of his childhood reawaken. Unable to sleep, he goes for a walk - and stumbles upon the body of a young man being pulled from the river. Simon and his assistant, Jane, are drawn into investigating the deaths, seeking a measure of justice for the powerless dead. But the pursuit of the truth takes them down a dangerous and deadly path. Can they overcome a powerful enemy who knows he stands above the law in Leeds - and the shadowy figure that stands behind him?