The final book in the steampunk Levethian series. Tesla claims to have a weapon that can end the war Deryn and Alek travel to New York to see it. Alek finds out Deryn’s 2 most kept secrets 1. She is a girl 2. She loves him. It will introduce My favorite Beastie The Russian Fighting Bears, Tesla, Pancho Villa, Mr. Hearst, etc. and it brings in two half Clanker and half Darwinist countries USA and Japan. Everything depends on ALEk’s next move find out what it is read goliath.