The story of the nineteen-year-old Christian hymnographer, Kassiani, and the young ruler, Emperor Theophilos, in sixth-century Byzantium.The story of the nineteen-year-old Christian hymnographer, Kassiani, and the young ruler, Emperor Theophilos, in sixth-century Byzantium.The story of the nineteen-year-old Christian hymnographer, Kassiani, and the young ruler, Emperor Theophilos, in sixth-century Byzantium.