Patrolling the remote West Texas backcountry, Anna’s first job as a national park ranger is marred by violence she thought she had left behind: the brutal death of a fellow ranger. When the cause of death is chalked up to a mountain lion attack, Anna’s rage knows no bounds.

It’s up to her to save the protected cats from the politics and prejudices of the locals—and prove the kill was the work of a species far less rare…