It's the last chance for Jacob Gamble, Rough Rider, outlaw and man of a few principles. Nearing 50 and flat broke, Jacob bends his own rule about robbing trains. But by the time he reaches the payroll safe on a Rock Island train, he finds another thief there first with a bullet in his head. Jacob is caught holding the bag - and turned into hero. A broke hero. Shackled by unwanted fame, running from a life gone wrong, and raising the suspicions of a Pinkerton detective, Jacob listens to a woman: beautiful and tattooed by the Indians who seized her as a child. Olivia Weathers knows of a treasure hidden in a cave along the Jornada del Muerto - a merciless hundred mile stretch of hell on earth guarded by Apache warriors. Now, Jacob will follow Olivia into the most savage and deadly territory in the southwest - where few ever come out of Canyon Diablo alive.