The Infernal Devices is a captivating prequel to Cassandra Clare’s Mortal Instruments series. It follows the journey of Tessa Gray, a sixteen-year-old American girl who finds herself in the mysterious and supernatural underworld of Victorian London.

Rescued by the Shadowhunters of the London Institute, Tessa quickly becomes entangled in an intrigue that could destroy her new friends, including the enigmatic young men, Jem and Will, who have taken her under their wing.

As Tessa finds her place among the Shadowhunters, supernatural protectors with angelic blood, she faces threats from the Clave and the ever-looming danger of the Magister. With friendships and loyalties tested, danger lurks where it's least expected.