Track of the Cat (Anna Pigeon, #1)

Anna Pigeon has fled New York and her memories to find work as a ranger in the country’s national parks. In the remote backcountry of West Texas, however, she discovers murder and violence. Fellow park ranger Sheila Drury is mysteriously killed, presumably by a mountain lion. But the deep claw marks Anna finds across Drury’s throat and the paw prints surrounding the body are too perfect to be real.