Hollow City wasn't the blast I was waiting for. Action is there, and plot twists too, but everything felt from the previous novel - maybe the fact that it was something completely new? - wasn't written in this second book. 
 Adventure and cohesion between the peculiar children are something interesting that someone might want to witness, but in the end? Hollow City is flat. 
 Honestly, there are a lot of things that bugged me during the whole reading. The children are just so... children? Okay, I know that they're wait they're, but it seems that Emma is the only one midly aware of the fact that she's actually an old woman. I can carry on with the fact that the children are jovial and a bit childish, but in the end, maye this book needed a crew ready to grow up, instead of disappering between bickerings and being not so amazing. 
 Plus, there was a real need of talking animals? Is it a tv show for children? No, it's a book and I couldn't care a bit for the peculiar animals. I would have love to see more peculiars around Jack's age or the fact that the story was going to concentrate its attention towars one of the peculiar alredy known. 
 Another annoying thing. They've powers but they useless as f**k. Emma has fire. She can start a fire. She basically used her power for nothing. 
 And can we talk about killing off characters that talked less the few words and with amazing power? 
 I had fun, while reading this book, that's why I give it three stars, but reviewing this book made me realize how much poorly this serie is going on and I'm quite sad, since the first book premise was utterly interesting.