In award-winning and bestselling author Nevada Barr's next mystery, a raging forest fire in California's Lassen Volcanic National Park traps exhausted firefighters, including Ranger Anna Pigeon, in its midst.

But the danger doesn't end there. After the flames subside, Anna uncovers a chilling truth—two members of their group have been brutally killed. As a relentless winter storm descends, cutting them off from the outside world, Anna must navigate the treacherous terrain and unravel the mystery of a murderer in their midst. With its gripping blend of suspense, atmospheric setting, and unforgettable characters, this thrilling novel will keep you on the edge of your seat until the very end.