The Mortal Instruments: City of Glass by Cassandra Clare is an incredible book written for young adults. The main idea with not only this book but, most of the books in the Mortal Instrument series, is good intentions will lead to success. Many of the characters find this easier said than done.

     
          In brief, this starts out where City of Ashes left off; Valentine is currently in possession of two of the three Mortal instruments. With the Mortal Cup and the Mortal Sword he can now raise demons and plans to destroy any Nephilim, A.K.A. Shadowhunters, that have ever interacted or consorted with a Downworlder. Clary and the Lightwoods set off for Idiris to find a potion to save Jocelyn, although, Jace has other plans in mind. When Magnus opens the portal to Alicante, the Lightwoods and Simon are attacked by hordes of demons and are forced to jump through the portal without Clary. Now with no way of joining the group, Clary must use her newly found talent and create a portal rune to take her into Idiris. When Clary jumps through her makeshift portal with Luke close behind, she quickly finds that she can't get into Alicante without authorization and instead is thrown into Lake Lyn and forced to hike to the gates.

After several chapters of exploring the new city and meeting new people, Clary journeys to find the Book of White that Jocelyn has hidden in a brilliantly named book (that you will just have to read to find out) in the Wayland manor. She is now accompanied by the handsome Sebastian, who Clary seems drawn to in a way. So not only does Clary have to worry about her mixed feelings for Jace and Simon, but what has now become an odd love square between them and Sebastian.

As the Nephilim prepare for the oncoming war, Jace and Clary must journey into the past to find out their true heritage. Once Jace has gone in search of Valentine, Clary must find a way to lessen the tension between Downworlders and Shadowhunters and create an alliance rune so they can all truly fight as one.

Without spoiling too much, I have to say that the ending of this book was probably the best out of all three and I would definitely read it again. This book was my favorite so far and will always be memorable. Especially, Jace's and Simon's wise crack jokes. One of the big issues that this book brings up is that you should always know where you stand and even if you feel your intentions are good they may be looked down upon by the angels and other people and are not always for the benefit of others but for yourself instead. I am in total agreement with Cassandra that in order for change, everyone needs to come together and work as one. This book goes to show that there are people in the world like Valentine but that there are also people like Clary and Jace. One person can make a difference and change the world.

All in all, City of Glass is my new found favorite in the series. Don't worry; most of your questions from the previous books will be answered in this book. Even though this book didn't have a suspenseful cliff hanger, it is still compelling you to read the next. I do have to advise you that this book is mildly gory and will be slightly confusing during the process of tying everything together. Besides that, this book will make you want to sit in the corner with your blanket, teddy bear, and all the Jace you can handle. It's an excellent read and you should definitely consider cracking open this series.