As the daughter of an alchemist, Petra Dee has faced all manner of occult horrorśespecially since her arrival in the small town of Temperance, Wyoming. But she cańt explain the creature now stalking the backcountry of Yellowstone, butchering wolves and leaving only their skins behind in the snow. Rumors surface of the return of Skinflint Jack, a nineteenth-century wraith that kills in fulfillment of an ancient bargain. The new sheriff in town, Owen Rutherford, isńt helping matters. Hés a dangerously haunted man on the trail of both an unsolved case and a fresh kilĺa bizarre murder leading him right to Petrás partner, Gabriel. And while Gabe once had little to fear from the mortal world, hés all too human now. This time, when violence hits close to home, there are no magical solutions. It́s up to Petra and her coyote sidekick Sig to get ahead of both Owen and the unnatural being hunting them alĺbefore the trail turns deathly cold.