At the risk of sounding like a rabid fanboy, I'm gonna go on a limb and say that Sanderson can do no wrong. 
 This is very much a YA novel, but it and its predecessor stand in a league of their own. 
 I may have been slightly ambivalent about the setup for this novel, but lo and behold! The revelations were not even close to being out of place, but they were still wild and fun as hell. I soon got into the groove of this novel so much that I practically stayed up all night to finish it. 
 These characters are all written in Sumi-E. Everything was broad and expressive brush strokes plastered against a fully transformed New York City. 
 Did I expect to see a submarine? Hell no! 
 These are just plain fun to read. I even loved the sap.