"Welcome to Walt Longmire's worst nightmare. Winter is creeping closer, but for Sheriff Longmire this one is looking to be harsh in a way to which he is wholly unaccustomed. He has found himself in the remotest parts of the north Mexican desert, a lawless place where no horse or car can travel, where no one speaks his language or trusts an outsider, far from his friends and his home back in Wyoming. An international hit man and the head of one of the most vicious drug cartels in Mexico has kidnapped Walt's beloved daughter, Cady, to auction her off to his worst enemies, of which there are many. The American government is of limited help and the Mexican one even less. Walt heads into the one-hundred-and-ten degree heat of the Northern Mexican desert alone, one man against an army"--