"When shy Miss Eliza Balfour married the austere Earl of Somerset, twenty years her senior, it was the match of the season--no matter that he was not the husband Eliza wanted. Now, ten years later, Eliza is widowed. Suddenly, she is left titled, rich, and, for the first time in her life, utterly in control of her own future. She's always lived by society's conventions, but now, Eliza has resolved to do as she wants. And what she wants is to head to...

As the Council attempts to strip Charlotte of her power, sixteen-year-old orphaned shapechanger Tessa Gray works with the London Shadowhunters to find the Magister and destroy his clockwork army, learning the secret of her own identity while investigating his past.