The Infernal Devices

Love is the most dangerous magic of all.... Something terrifying is waiting for Tessa Gray in London's Downworld, where vampires, warlocks and other supernatural folk stalk the gaslit streets. Tessa seeks refuge with the Shadowhunters, a band of warriors dedicated to ridding the world of demons. Tessa finds herself fascinated by and torn between two best friends.... First in the best-selling prequel series to The Mortal Instruments, set in Victorian London.

Love and lies can corrupt even the purest heart.... In the magical underworld of Victorian London, Tessa Gray finds her heart drawn more and more to Jem, while her longing for Will, despite his dark moods, continues to unsettle her. But something is changing in Will - the wall he has built around himself is crumbling. As their search for the truth leads the three friends into peril, Tessa's heart is increasingly torn, especially when one of their own betrays them.

Love and lies can corrupt even the purest heart. Tessa Gray find her heart drawn more and more to Jem, while her longing for Will, despite his dark moods, continues to unsettle her.

A net of shadows begins to tighten around the Shadowhunters of the London Institute. Mortmain needs one last item to complete his plan. He needs Tessa. But Jem and Will, the boys who lay equal claim to Tessa's heart, will do anything to save her. 

A net of shadows begins to tighten around the Shadowhunters of the London Institute. Mortmain plans to use his Infernal Devices, an army of pitiless automatons, to destroy the them. He needs only one last item to complete his plan: he needs Tessa Gray. But can a single girl, even one who can command the power of angels, face down an entire army?