As the Council attempts to strip Charlotte of her power, 16-year-old orphaned shapechanger Tessa Gray works with the London Shadowhunters to find the Magister and destroy his clockwork army, and in the process, she learns the secret of her own identity while investigating his past. Features a previously unseen letter from Will to his family.
Tessa Fell's search for her missing brother leads her into Victorian London's supernatural underworld, where she must learn to trust the demon-killing Shadowhunters if she wants to learn to control her powers and find her brother.