The Air War - Blood of the Night Princess

Jo Martin has learned from the rebels that there is evidence suggesting not all the royals in the Night Kingdom were killed in the Ground War twenty-five years ago. One princess may have survived the massacre. Before Jo and Vale can investigate though, the Sky King, courtesy of his slave inventor, the Wilde Crow, has launched an attack in the air. Forced back into the ruins on the ground, Jo seeks shelter from the reclusive Bone Queen, only to learn some startling information that could change the face of the entire Air War. Will Jo be able to make sense of all these changes, or will she be consumed by the secrets of the past?