“A taut page-turner on multiple levels.” —Booklist
“Dog lovers will want to read this thriller.” —Library Journal

In this follow-up to Killing Trail, a murder investigation takes Mattie Cobb and her canine partner to the Colorado mountains—where the brutal winter landscape conceals an equally brutal killer.

When Deputy Ken Brody’s sweetheart goes missing in the mountains outside Timber Creek, Mattie Cobb and Robo are called to search. But it’s mid-October and a dark snow storm is brewing over the high country—and they’re already too late. By the time they find her body, the storm has broken and the snow is coming down hard.

While Brody hikes down to bring back the forensics team and veterinarian Cole Walker gathers supplies to protect them from the storm, Mattie and Robo find themselves alone, guarding the gravesite overnight in the dead of the early winter. And that’s only the first long, dark night in a series of them, because as their investigation develops, Mattie, Robo, Brody, and Cole find themselves in the middle of the killer’s stalking ground—with no way out unless they can catch a predator more deadly than any natural threat.

Filled with tension, excitement, and heart, this new installment in Mizushima’s much lauded series will send a chill down every reader's spine.