Three years after the catastrophic conclusion of Thunderhead, Citra and Rowan are missing and the Scythedom has fractured into a global power struggle, while a new religious movement has formed around a young man who claims to hear the silenced Thunderhead's voice. The final volume of the Arc of a Scythe trilogy is sprawling and ambitious, bringing all threads to a conclusion that matches the series' philosophical seriousness. A very long but ultimately satisfying conclusion.