A net of shadows tightens around the Shadowhunters of the London Institute. Mortmain plans to use his Infernal Devices, an army of pitiless automatons, to destroy them. He needs only one last item to complete his plan: he needs Tessa Gray.

When Mortmain abducts Tessa, the boys who lay equal claim to her heart, Jem and Will, will do anything to save her. For though Tessa and Jem are now engaged, Will is as much in love with her as ever.

Danger and betrayal, secrets and enchantment, and the tangled threads of love and loss intertwine as the Shadowhunters are pushed to the very brink of destruction in this breathtaking conclusion to the Infernal Devices trilogy.

This book features in the following series: The Infernal Devices, The Mortal Instruments .

There are 288 pages in this book. This is a comic book. This book was published 2014 by Little, Brown & Company .

Cecily von Ziegesar lives in New York City. She's already working on her next Gossip Girl novel, I Will Always Love You, and her next 'IT Girl' novel. HyeKyung Baek is a bestselling manga creator in South Korea well known for her stylish flair and sense of drama. Her skills are ideally suited to bring the lives of the original Gossip Girl cast to life. Cassandra Clare lives in Massachusetts, USA, with her husband. She is the author of the international number-one bestselling series The Mortal Instruments and its prequel sequence The Infernal Devices.