Harper Blaine is on the mend, but evil never rests-in the latest novel from the national bestselling author of Labyrinth .  After being shot in the back and dying—again—Greywalker Harper Blaine's only respite from the chaos is her work. But while conducting a pre-trial investigation in the Olympic Peninsula, she sees a ghostly car accident whose victim insists that he was murdered and that the nearby community of Sunset Lakes is to blame.  Harper soon learns that the icy waters of the lake hide a terrible power, and a host of hellish beings under the thrall of a sinister cabal that will use the darkest of arts to achieve their fiendish ends...

When a comatose woman suddenly wakes up and starts painting scenes she’s never witnessed, with a skill she’s never had, medical science has no explanation. As more bizarre phenomena manifest, even her doctors start to wonder if the woman may be possessed. Frustrated and frightened, the patient’s sister reluctantly turns to Greywalker Harper Blaine to discover who—or what—is occupying her sister’s body. As Harper digs into the case of apparent possession, she discovers other patients struck with the same mystifying afflictions and a disturbing connection to one of the most gruesome stories in Washington’s history…

The toughest case yet for Greywalker and P.I. Harper Blaine, 'a great heroine' (New York Times bestselling author Charlaine Harris), has arrived. Harper Blaine was your average small-time P.I. until she died—for two minutes. Now Harper is a Greywalker—walking the line between the living world and the paranormal realm. And she's discovering that her new abilities are landing her in all sorts of 'strange cases. But for Harper, her own case may prove the most difficult to solve. Why did she—as opposed to others with near-death experiences—become a Greywalker? When Harper digs into her own past, she unearths some unpleasant truths about her father's early death as well as a mysterious puzzle. Forced by some very demanding vampires to take on an investigation in London, she soon discovers her present troubles in England are entangled with her dark past back in Seattle—and her ultimate destiny as a Greywalker.

Harper Blaine was your average small-time PI until she died—for two minutes. Now she's a Greywalker—walking the thin line between the living world and the paranormal realm. And she's discovering that her new abilities are landing her all sorts of «strange» cases. In the days leading up to Halloween, Harper's been hired by a university research group that is attempting to create an artificial poltergeist. The head researcher suspects someone is faking the phenomena, but Harper's investigation reveals something else entirely—they've succeeded. And when one of the group's members is killed in a brutal and inexplicable fashion, Harper must determine whether the killer is the ghost itself, or someone all too human.