The Navajo called them the Anasazi: an enigmatic race of southwestern cliff dwellers. For centuries, the sudden disappearance of this proud and noble people has baffled historians. Summoned to a dark desert plateau by a desperate letter form an old friend, renowned investigator Mike Raglan is drawn into a world of mystery, violence, and explosive revaltion. Crossing the border beyond the laws of man and nature, he will learn the astonishing legacy...