Snow came early to the Rockies, sealing the passes until spring. Blue Thom turned south instead, into Arizona Territory. The largest cache could wait. The work could not.
He expected to face it alone, the way he's faced everything for forty years. Rose Chen had other plans.
She catches up to him, carrying her grandmother's journal and a stubbornness that matches his own. Together with a weathered Mexican scout named Joaqu n, they push deeper into the desert, hunting technology left behind by Blue Thom's father.
But others are hunting, too. An unknown person stealing from caches as well as an organization called the Collectors are closing in.
The desert is patient and unforgiving.
What it takes, it keeps forever.