Clockwork Prince by Cassandra Clare is the second book in The Infernal Devices trilogy, continuing the story of Tessa Gray, a young woman with magical abilities, as she navigates the dangerous world of Shadowhunters in Victorian London. Tessa is torn between her feelings for two very different men: Will Herondale, a charming but troubled Shadowhunter, and Jem Carstairs, his kind and devoted parabatai. As Tessa delves deeper into her mysterious powers, she uncovers secrets about her past and the sinister forces threatening the Shadowhunters. The novel explores themes of love, sacrifice, and identity, while advancing the central conflict of stopping a powerful villain from unleashing chaos.