Events which took place in 1938 lead to the present-day killing of a ranch hand in the remote canyon country near Moab, Utah, a mecca for outdoor adventure seekers. The only clue besides a 9-mm slug in the victim's head is an ancient-Indian potsherd stuck into his chest. Deputy Sheriff Manny Rivera is assigned the case and judges that it's likely related to a drug deal gone bad. But he's actually up against an intelligent and cunning adversary driven by greed who's discovered a long-forgotten cave containing a collection of rare museum-quality Indian artifacts. Local politicians and merchants...