When Al agrees to help Fergie find the missing son of one of their long-ago high school classmates, they head off to a ranch in the valley, where some wide open spaces still remain in Southeast Texas. He is okay with following Fergie’s lead in the case, for a change, and even with riding horses. But what he doesn’t expect is for the trail of the missing son to lead them into the path of one of America’s most violent gangs, the Mara Salvatrucha, MS-13. They are vicious, tattooed career criminals, their lives devoted to machetes and guns. And this bunch is gearing up to wage war with other gangs—fighting, maiming, killing, and dying over their turfs, their colors, and their hand signs. Heaven help anyone in their way…and to do their job, Fergie and Al find themselves squarely in the way.