Byzantium, capitol of the 6th century Roman Empire, simmers a rich stew of creeds, cultures, and citizens with a sprinkling of cutthroats and crimes. John the Eunuch, Emperor Justinian's Lord Chamberlain, orders a Christian court while himself observing the rites of Mithra. Thomas, a knight from Britain, Ahasuerus, a soothsayer, and two ladies from Crete stir up events and old memories for John, who must ask how the visitors link to the death of Leukos,...