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The prequel trilogy to the internationally bestselling Mortal Instruments Series, The Infernal Devices is set in Victorian London where Shadowhunters are barely winning against the forces of evil. American Tessa Gray is thrown into the midst of a war between the Shadowhunters and the evil Magister, who will stop at nothing to claim Tessa's hidden powers - the ability to transform into another person.

Latest book from The Infernal Devices

The Clockwork Princess

Book #3

Danger and betrayal, love and loss, secrets and enchantment are woven together in the breathtaking finale to the #1 New York Times bestselling Infernal Devices Trilogy, prequel to the internationally bestselling Mortal Instruments series.

Danger intensifies for the Shadowhunters as the New York Times bestselling Infernal Devices trilogy comes to a close.

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 final installment of the bestselling Infernal Devices trilogy.
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Don't Miss These Previous Books in the Series!

About the Author

Cassandra Clare
Photo by Kelly Campbell copyright © Simon & Schuster, inc.

Cassandra Clare

Cassandra Clare is the author of the #1 New York Times, USA TODAY, Wall Street Journal, and Publishers Weekly bestselling Mortal Instruments series and the Infernal Devices trilogy, and coauthor of the Bane Chronicles with Sarah Rees Brennan and Maureen Johnson. She also wrote The Shadowhunter's Codex with her husband, Joshua Lewis. Her books have more than 35 million copies in print worldwide and have been translated into more than thirty-five languages. Cassandra lives in western Massachusetts. Visit her at CassandraClare.com. Learn more about the world of the Shadowhunters at Shadowhunters.com.

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Cassandra Clare and Ed Westwick talk about the Clockwork ...

Cassandra Clare interviews Ed Westwick from the recording studio about the Clockwork Prince Audiobook!

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