Every week a new victim; strangled and left behind with four vertical slashes carved into their skin. As the number of murdered young woman increases, the pressure mounts for homicide detective Finlay Reid. It is a race against time to find and stop the one responsible. His talents and instincts are pushed to the limit when he begins to suspect that Robyn Ashton is also on the killer's list. When Robyn vanishes without a trace, Finlay is forced to use not only his investigative skills but also call upon his supernatural abilities as Kai and Keykeeper. He must push his powers further than he ever thought possible. The sinister criminal Damier, more dangerous in death than in life, opposes him at every turn. A message from a Halfway leads him to the Scottish Highlands. In a battle where unknown forces and newfound powers threaten to overwhelm him, Finlay faces adversaries who want just one thing: his death.