Silas Pearson is looking for answers. It's been more than three years since his wife, Penelope de Silva, disappeared while working on a conservation project in Utah's red rock wilderness. Law enforcement authorities have given up hope of finding the adventurous Penelope alive. And some suggest that she may not have vanished into the desert at all, but simply left Silas for another man. Silas moves to Moab, where his wife was last seen, with one purpose:...

Silas Pearson is plagued by nightmares. In them, his wife Penelope, who has now been missing for four years, is leading him to murder victims across the Colorado Plateau. When his dreams lead him to the Atlas Mill Tailings Project outside of Moab, Utah, Silas discovers the corpse of anti-uranium mining activist Jane Vaughn, who had gone missing from Flagstaff, Arizona. Silas travels across the Southwest and finds himself on the North Rim of the Grand...