Behemoth

Behemoth is by Scott Westerfeld. The second book in the steam punk science fiction Leviathan series. The airship Alek and Deryn are on reaches Istanbul, where the eggs it is carrying are meant for the sultan. Once there Alek manages to escape and join a band of rebels who are fighting the Germans. Deryn, who everyone still believes to be a boy, is charged to head up a secret mission. When everything goes south, they both find themselves hunted by their enemies. Fans of the series will enjoy this installment. 

Ratings: 8th grade - 8 out of 10.