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. 

Latest Book in Series

Clockwork Princess
By Cassandra Clare
Book #3
Danger, betrayal, and enchantment abound in the “exhilarating” (Booklist) conclusion to the #1 New York Times bestselling Infernal Devices trilogy—now with a gorgeous new cover, a new foreword, and exclusive bonus content! Clockwork Princess is a Shadowhunters novel.
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