This book is the third installment in the Mortal Instruments series. Clary Fray has found a way to awaken her mom by going to Idris which is the homeland of all Shadowhunters, to retrieve a spell book. Unfortunately, Jace plans to try and keep Clary away from Idris and to put as much distance between them as possible. While this is going on Valentine is planning on seizing Idris with a demon army.
This was the best book out of the series. Everything from the previous books is explained in this one, and there are so major twists.
I would recommend it obviously if you have read the previous books. This book is different from the typical teen fantasy romance because there is so much else going on and doesn't just focus on the two lovers.
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