The Thunderous Conclusion to Scott Westerfeld's Steampunk Trilogy! The tensions thicken as the Leviathan steams toward New York with a homicidal lunatic on board! Alek and Deryn are on the last leg of their round-the-world quest to end World War I, reclaim Alek's throne as prince of Austria, and finally fall in love. The first two goals are put on hold by the fact that their steamship continues to detour further from the heart of the war (and Alek's crown). And the love thing would be a lot simpler if Deryn hadn't had to pose as a boy in order to serve in the British Air Service...and if they weren't technically still enemies. Will it all work out?