First-year deputy Hondo Velazquez has been a lot of things: an orphan, a rodeo cowboy, a Marine, a drifter and a loner. But he's never hunted a killer. Until now... Convinced the skeletons of a migrant mother and child are no accident, Deputy Velazquez partners with local forensic investigator Magnolia Moss to uncover the truth and unmask a serial killer. With every turn, there's a new suspect. And with each suspect, new danger. As the threads of their investigation begin to unravel, Hondo and Magnolia find themselves bound together and forced to risk the only thing they're unwilling to lose: one another. As bodies and bones begin to mount, they must race the clock to deliver justice before they find themselves hunted like prey in an unforgiving desert where people disappear everyday. But how do you catch a killer when you don't know his victims?