Cassandra Clare made her debut in the publishing world with her first young adult novel, City of Bones, and has published three more bestselling novels in the Mortal Instruments series. Clockwork Angel, released in August 2010, was the first part of Cassandra's Infernal Devices trilogy and debuted at number one on the New York Times list. Cassandra Jean is a freelance illustrator and comic artist who spends her days with a pen in hand and her loyal dog sleeping at her feet. The radio is always on, and Gatorade is a constant source of energy.