Criminology academic Kate Marshall is on a scuba jaunt with her son when they dive toward a shocking discovery: the body of a teenage boy entangled below the surface of the Shadow Sands reservoir. The detective chief inspector's too-quick narrative of a tragic drowning doesn't add up, and when Kate follows the evidence, it leads to a darker discovery. The victim is only the latest in a series of mysterious deaths and disappearances linked to the moorlands--and...