Detective Tracy Collier is called to a remote field where an elderly woman’s body has been found, throat slit.

The victim, Irene Roberts, lived at a care home, and her son believes she’s just missing. As Tracy investigates, a second body is discovered, and disturbing signs point to her troubled sister, Lisa, being back in town.

With a killer on the loose, Tracy must race against time to stop more deaths — and face her own past.