Byzantium, 1096. A mysterious assassin releases an arrow aimed at the emperor---but he has more than just a man in his sights. A keystone of a crumbling empire, the emperor is the solitary figure holding all the enemies in check. And if he falls, the mightiest power in Christendom will be torn apart.Demetrios Askiates, unveiler of mysteries, is hired to catch the would-be-killer. But he is entering an unknown world; a babbling cauldron of princes,...