Carved into the towering cliffs of central Greece, the Metéora monasteries are all but inaccessible. Holy Trinity is the most isolated, its sacred brotherhood the guardians of a long-forgotten secret.In the dead of night, the sanctity of the holy retreat is shattered by an elite group of warriors carrying ancient weapons. One by one, they hurl the silent monks from the clifftop to the rocks below -- the holy men taking their secret to their graves.Halfway across Europe, Richard Byrd has uncovered the location of a magnificent treasure. But there are those who have dedicated their lives to protecting it, and they will stop at nothing to prevent its discovery.Afraid for his life, Byrd calls Payne and Jones and begs for their help. Although they've never met him, Payne and Jones get involved when they learn a friend of theirs is in danger. Before long, they are swept up in an adventure of a lifetime, one that will rewrite history and change lives forever.