From New York Times bestselling author Neal Shusterman comes the thrilling conclusion to the Printz Honor–winning series Arc of a Scythe.It’s been three years since Rowan and Citra disappeared; since Scythe Goddard came into power; since the Thunderhead closed itself off to everyone but Grayson Tolliver. In this pulse-pounding conclusion to New York Times bestselling author Neal Shusterman’s Arc of a Scythe trilogy, constitutions are tested and old friends are brought back from the dead.