Daniel Abraham delighted fantasy readers with his brilliant, original, and engaging first novel, "A Shadow in Summer." Now he has produced an even more powerful sequel, a tragedy as darkly personal and violent as Shakespeare's "Macbeth." As a boy, Otah Machi was exiled from his family, Machi's ruling house. Decades later, he has witnessed and been part of world-changing events. Yet he has never returned to Machi. Now his father--the Khai, or ruler,...