What if the Great Fire of London wasn't an accident? London, 1666. Eleven-year-old Jem Green is a lonely but resourceful kitchen boy, always in trouble with the cook for pilfering from the larder. He's fascinated by the wealthy visitors he glimpses in the Dukes' household but when the powerful and frightening Count Cazalon requests to meet him, it becomes clear that his life might actually be in danger. And he is not the only child involved in the Count's sinister plan. As Jem starts meeting secretively with Ann, a young sorceress, and Tolly, a mute slave boy who can mind-speak, the three of them piece together the Count's terrible plans to devastate the City of London, and try to understand why Jem is at the heart of it all. 'Recalls Joan Aiken and Sally Gardner in its confident blend of historical fact with creepy fantasy' THE TIMES