This is the sequel to the already impressive Leviathan, and continues Westerfeld's rollicking alternate universe take on the Great War. We continue to follow Deryn and Alek as they and the living airship Leviathan embark on an important mission in Istanbul.
The author depicts the exotic city beautifully, with both period detail and his own additions- some very cool animalistic walkers and steam powered shadow plays, among others.
The world might be just as great as in the original book, but here the characters take centre stage, as they and their relationships deepen and develop. Alek begins to fully consider his destiny and possible role in ending the conflict, and Deryn struggles between duty and friendship, and examines her own burgeoning feelings for the archduke's son who still thinks her a boy.
There are great new characters too, in the resistance fighters our heroes befriend within the city. We also finally discover what is inside Dr. Barlow's mysterious eggs, and those expecting a powerful warbeast of some kind might be pleasantly surprised.
The tale builds to a thrilling climax as the protagonists face the horrors of a new German weapon, and the action scenes throughout the book are of a higher standard than those in the original book.
Sterling work, too, from Keith Thompson, whose illustrations just get better and better. His drawings impart bags of character to Alek, Deryn and their friends, and he excels at depicting the industrial machinery of the Clankers as well as the biological monstrosities of the Darwinists (Cronenberg would be proud).
Now the only problem is waiting for the last installment!