What should I say? I read it in one day and I loved and I hated this book (hate only because the storyline racked my nerves). Without giving away any major spoiler I can tell that this book is amazing. I mean I'm in love with the Mortal Instruments series so there is no way I wouldn't feel anything else than love for this book. I was utterly surprised to see the storyline change so drastically and still feeling so passionate about what happens to everyone along the way. The writing is exceptional and I absolutely love the fact that Cassandra Clare doesn't take her story to seriously. Is there anything better than laughing while Clare makes a reference about the Human Torch? No there isn't. If you read the last book (Book 4: City of Fallen Angels) you now that it was somehow a downer. You can cleary see that Clare originally planed the series to be a trilogy. So you could say we hit rock bottom in City of Fallen Angels (not really rock bottom because TMI is just the best - but a big time low throughout the series) but Clare equally rises the book series again like Raziel rose from Lake Lyn ;) 
 The story was captivating. We get to know the characters a lot more and if you're anything like me and you enjoy a lot of relationship stuff than this book won't let you down. Even if the story is nerve-racking considering us Jace-Lovers out there! 
 I'm so excited to read the last installment!