After Kara Westfall's village turns on her for practicing witchcraft, she and her brother, Taff, flee to the one place they know they won't be followed: the Thickety. Only this time Kara is magicless without her grimoire and Sordyr, the forest demon, is intent on keeping them there. Kara and Taff will meet other inhabitants of the Thickety in their search for a safe way out, including the infamous witch, Mary Kettle. But can they trust anyone -- plant, creature, witch, book, or magic -- to help them escape, to undo Grace's final terrible spell, and to stop Sordyr's horrible reach from spreading across the rest of the world?