Charlotte Savage knows who killed her daughter. But before Charlotte can get her revenge, disturbing events start to unfold on Dartmoor.... A woman's naked body is found near an isolated reservoir on the bleak winter moors. When the woman's housemate also goes missing, Charlotte knows she must move fast. But in a police force tainted by corruption, Charlotte's hunt for the killer won't be easy. And resisting her own urge to kill will be even harder....