I was disappointed with this book. I liked the trilogy. I even like the Infernal Devices start to that trilogy. I didn't think that this series needed to go on after the end of City of Glass. That story arc was done and everything was pretty much tied up. The characters had promising things to look forward to in the future. I think City of Fallen Angels negates everything that the characters fought for in the Trilogy. I mean Jace and Clary are finally able to be together at the end, and then in this book do they get to have a normal relationship? No, of course not, they are again dealing with angst and drama. Let me just say that I would have appreciated it more if Jace and Clary were together and fighthing the "bad guys" together, working on their relationship while other things are happening in the background. 
 This doesn't apply to just Jace and Clary. This applies to all of our characters in all of their relationships. Alec / Magnus, Isabelle / Simon / Maia. They were all moving forward at the end of City of Glass, and here I feel they all took two steps back. It made me a little sad to see how our characters don't get to grow and change with the new elements in their lives. 
 Not only were the relationships messy again in this book, but the storyline itself just didn't pull me in. It took too long to develop and I didn't know where it was going until the very end, and by that time unfortunately I didn't care anymore. I think that there were some events that could have been kept, but for the most part the major storyline could have been scrapped and the remaining good elements could have been added to the next book and been fine. This felt like a long bridge that is supposed to connect City of Glass with City of Lost Souls. 
 I felt like Clare was trying to start over again with this series, but it didn't reel me in like the first three books did. 
 I did like being back in this world though. I liked being back with all the characters again, I just wish we weren't basically reading about the same problems. 
 Even with the cliffhanger ending I wasn't upset. Usually if a story ends on a cliffhanger I am anxiously anticipating the next book. I didn't feel that by the end of the story. I will continue to read the series. I rarely don't read all of the books in a series, and I think I've come too far to stop now. I am keeping my fingers crossed that City of Lost Souls will redeem the second half of this series. Until then we do have Clockwork Prince to look forward to.