Circus of the unseen

After an accident at her grandmother's house, Rosie is transported to a strange and sinister world populated by a cast of carnivalesque characters who reside in the Circus of the Unseen. Reigning over them is an old woman called Mother Matushka, who guards the threshold between life and death and has extraordinary powers over all around her. This is an in-between world, a bizarre and trapped existence, but Rosie is not like the others here. She seems to be hovering between the world of the living and the world of the dead, and even seems to have the power to challenge Mother Matushka. Can Rosie escape Mother Matushka's formidable rule and a world in limbo? And can she solve another mystery - one that lies at the heart of her grandmother's life?