I have no words to express how much I enjoyed this book. I loved this series so much and it makes me sad to see it end. However, I am still thankful for this wonderful finale. Thank you and congratulations Ms. Cassandra Clare for this awesome series! 
 The book began with Aloysius Starkweather's past, in which his grand daughter died during the Marking ceremony. There was also a brief flashback on how Will and Jem's friendship started. Back to the present, Tessa is preparing for her wedding--- they were running out of time because of Jem's deteriorating health. There are no more yin fen available for him to prolong his life. Mortmain have been hoarding yin fen to coerce the Institue to give up Tessa (in exchange of the drugs to save Jem) in order to complete his plans for the Infernal Devices. Will on the other hand have a lot things on his plate, aside from worrying about Jem's health, he also worries about his sister Cecily who opted to stay in the Institute. On top of that, he can't stop loving Tessa, even though she's already engaged with his parabatai and that made him feel guilty. 
 The Clockwork Princess is probably one of the best series finale that I've ever read. It was full of action, drama and romance. It was a hell of an emotional roller coaster ride. I loved the fact that the other shadow hunters have found happiness despite the troubles they were facing. Like Gideon getting engaged with Sophie, Gabriel found a friend (and later more than that) with Cecily, Henry and Charlotte expecting their first child and so on. It makes me forget the craziness of the Will-Tessa-Jem love triangle! LOL. 
 The first few chapters were depressing AND confusing. On the first book of the series I really was rooting for Jem, for goodness sake, the guy creates beautiful music with his violin, is there anything more romantic than that? However, when I read this book, I just felt so bad for Will. It must be so hard to see the person you love the most engaged to someone else. What made all of this confusing was Tessa's feelings. 
 "They say you cannot love two people equally at once," she said. "And perhaps for others that is so. But you and Will--you are not like two ordinary people, two people who might have been jealous of each other, or who would have imagined my love for one of them diminished by my love of the other. You merged your souls when you were both children. I could not have loved Will so much if I had not loved you as well. And I could not love you as I do if I had not loved Will as I did." 
 - Tessa Gray 
 That's the part in the book that I probably wouldn't understand no matter what I do... is it really possible to love two people at the same time? I mean romantically, it's just so...idk, weird? unreal? impossible? In my head it's as if Tessa was cheating, only with consent (because Will and Jem love each other that they are willing to share the girl?). There are so many "what if" scenarios that pops up in my head whenever I read the quote above. Like, what if Will was the jealous and possesive kind of guy, will Tessa continue her one hour/year meetings with Brother Zachariah/Jem? What if Jem didn't die, will she continue loving Will even if he married Jem? Waaah, it really drives me mad. LOL! Anyway, I think Ms. Clare did a wonderful job on writing this epic love triangle. Honestly, I think I'm still going to be happy even if Jem and Will married each other in the end. haha, bromance ftw! 
 If there's one thing I didn't like about this book, it's the fact that Tessa got the boys, you greedy woman! I wished she shared one of the guys with me, LOL! Just kidding! I loved everything about this book and I highly recommend this series to YA fantasy lovers. =D