This book is amazing. I gave it a 5/5 stars because it was so hard to put this book down. After reading the slightly disappointing Clockwork Prince I was so happy that Cassandra Clare picked up her game with this book. I literally was smiling the entire time reading the book because it was so good. 
 Cassandra Clare's writing style is literally my favorite thing ever to read now. She switches between multiple point of views throughout each chapter. That definitely helps when one character is getting on your nerves so you want to read from the other peoples point of view. 
 All the characters ended up with "the right person" and I'm not even judgmental of how everyone in that small group found happiness because it was done in such an amazing way. 
 In Clockwork Prince, Gideon Lightwood starts flirting with Sophie, the maid and they finally get together and I'm so happy!! Plus his brother Gabriel finds someone and it's cute but I don't ship it. 
 Remember at the end of Clockwork Prince how Cecily, Will's younger sister shows up at the Institute? Ya, she is here to bring my Will home but she's a Shadowhunter in the blood. The only problem I have with her is that she's 15 and she acts like she was a lot older. 
 The entire novel there is correspondence between the Consul and the members of the council about who the next Consul should be. The council believes that my favorite character, Charlotte Brandwell Fairchild should be the next Consul but the current Consul, Josiah Wayland is sexist. Josiah wants his son to become Consul even though he has no experience and Charlotte is the obvious best choice. 
 As it is the finale to The Infernal Devices we are going to want to defeat Mortman for once and for all. Mortman is a very persuasive man and I'm not even embarrassed to say that I would've helped him had I been Tessa. He honestly seemed to have legitimate reasons to want to destroy the Shadowhunters. 
 Will is actually slightly less of a problem in this book but as we all know moodiness runs in the Herondale family (*cough cough* Jace). With his sister around he wants to impress her kind of and now he must help out because of the yin fen running out.