Three terrible things happen in a single day. Essun, masquerading as an ordinary schoolteacher in a quiet small town, comes home to find that her husband has brutally murdered their son and kidnapped their daughter. Mighty Sanze, the empire whose innovations have been civilization's bedrock for a thousand years, collapses as its greatest city is destroyed by a madman's vengeance. And worst of all, across the heartland of the world's sole continent,...