If the only way to save the world was to destroy what you loved most, would you do it? The clock is ticking. Everyone must choose. Passion. Power. Secrets. Enchantment.

Danger closes in around the Shadowhunters in the third and final instalment of the bestselling "Infernal Devices" trilogy. This book will be subject to a strict global embargo. Don't miss The Mortal Instruments: City of Bones, soon to be a major motion picture, in cinemas August 2013.

The "Infernal Devices" and its sequel series, "The Mortal Instruments", have been sold in more than thirty countries. The books have also appeared internationally on bestseller lists, including in the UK, USA, Germany, Ireland, Australia, New Zealand and Canada. This is the first book in "The Infernal Devices" series, Clockwork Angel, debuted at number one on the New York Times Bestseller list and spent ten weeks in the charts.

Tessa Gray should be happy — aren’t all brides happy? Yet as she prepares for her wedding to Jem Carstairs, a net of shadows begins to tighten around the Shadowhunters of the London Institute. A new demon appears, one linked by blood and secrecy to the Magister, the man who plans to use his army of pitiless automatons, the Infernal Devices, to destroy the Shadowhunters. He needs only one last item to complete his plan of destruction. He needs Tessa.