I completely fell in love with the first book in this series, however this second iteration has fallen short of the mark set by the first. 
 It's by no means a bad book, and I enjoyed the view point of Holly Short more in this than the first. However, my love for the first came from Artemis himself, and in this one... 
 So, a big issue with writing very, very smart characters, is that they have to BE very, very smart. This came across beautifully in the first book! Artemis managed to outsmart everyone else in a convincing manner, but at no point did I feel confused by him or his actions. In this one, Artemis came across as rather normal. He regularly forgot basic things that even I had managed to remember. 
 A shame, and I'm not sure if I'll move onto book 3 or not :/