The breathtaking fantasy adventure for fans of His Dark Materials that The Times calls Unputdownable. n n The City was built on a sharp mountain that jutted improbably from the sea, and the sea kept trying to claim it back. That grey morning, once the tide had retreated, a whale was found on a rooftop. n n When a mysterious boy washes in with the tide, the citizens believe hes the Enemy - the god who drowned the world - come again to cause untold chaos. n n Only Ellie, a fearless young inventor living in a workshop crammed with curiosities, believes hes innocent. n n But the Enemy can take possession of any human body and the ruthless Inquisition are determined to destroy it forever. n n To save the boy, Ellie must prove who he really is - even if that means revealing her own dangerous secret . . . n n Unputdownable - The Times n n Singularly brilliant - Kiran Millwood Hargrave, author of The Girl of Ink and Stars n n Energetic and inventive - Sunday Times n n Absolutely cracking! - Fleur Hitchcock, author of The Boy Who Flew n n A terrific debut of strange myths and dark secrets - The Bookseller (Editors Choice) n