When private investigator Francesca “Frankie” Quinn’s fiancé is murdered, his sister hires her to find the killer. Frankie must work with Wyn, the local detective assigned to the case…who also happens to be her ex. As the one-time couple joins forces to unravel a serpentine plot, the investigation strikes at their hearts.

When a cunning murderer vanishes into the rugged mountains of the Pacific Northwest, pursuing FBI agent Warren Stantin must exchange familiar city streets for unknown wilderness trails. Completely out of his element, Stantin is forced to enlist the aid of expert tracker Jonathan Knox. It's a turbulent yet vital relationship they must maintain in order to survive... and one that becomes increasingly desperate when Knox's girlfriend Sarah becomes the killer's latest hostage!