Pip lives on his wits in the city of Clarel. When he pickpockets the wrong man, he finds himself in possession of a strange object – a heart in a silver casket. What’s more, the heart seems to be trying to communicate with Pip, and the royal officials who lost it will stop at nothing to get it back. Pip has unwittingly broken an ancient spell, and his theft will have far-reaching consequences for the whole city. As the ancient war between the Spectres and witches of Clarel reignites, the heart prepares to seek revenge for all it has suffered.