I can't even believe that this book was written by the same author as the first 3 books. It boggles the mind. I was so disappointed in this book that I barely completed it. I trudged through it, and ZOMG, it was painful. 
 After the completion of the first 3 books, I can't help but think that the subsequent novels were an afterthought, and written long after the first 3 - the voice doesn't even sound the same. The first 3 books could have completed the series, and I would have been happy. The ending was nice and neat and completed the series IMO. 
 Then. Then, chile. I read the epilogue for the third book, which lead to this one, and it was absolutely a mess. If felt small and cheap and not at all as full and detailed as the previous books. The storyline went from this epic urban fantasy to this vapid, totally cliche YA romantic trope crap. 
 It was a mess. 
 I will not be completing this series. Save yourself some time and stop reading after City of Glass. 
 *spits*