On the trail of his missing sister, Seb Straeker - a battle-hardened US Army Ranger gone AWOL - tracks Angel's last known location to a remote northern town on an almost forgotten coast.

Jaz Freeman - an undercover FBI agent - is drawn to the town when trying to uncover a series of cold case murders.

For Jaz and Seb, the secrets of the town become a deadly game neither expected. Racing the clock with lives in the balance, both must find the strength to face their fears, to confront the unspeakable, and ultimately to survive...