A police officer will do anything to catch the serial killer that got away—even if it means playing a deadly game in the icy wilderness.

Sweetwood Falls, Yukon, has seen too much terror for one small town. Corporal Aurora Hunt still blames herself for not catching the Shadow Box Killer before five women lost their lives. The killings stopped two years ago, and her colleagues believe the murderer is dead. But Aurora isn’t convinced.

A chilling discovery on a winter’s morning confirms her fears. The crime scene is all too familiar—a woman’s mutilated body, and beneath it, a box containing a gruesome souvenir. But this time, there’s a special message, daring Aurora to play a game that will lead her into the wilderness to try and save the next victim.

Canadian Watcher Squad survivalist Kordell Greene is part of the past that Aurora has tried to put behind her. He’s also the only person equipped to guide her through this deadly terrain. But somehow, the killer knows all their secrets. Solving cryptic clues as they battle the elements, Aurora and Kordell must confront dark truths they’ve withheld, even from each other. And always, the Shadow Box Killer is one step ahead, drawing them deeper into a twisted game where the slightest mistake may be their last.