The mystifying medicine show

Orphan Ray has been separated from his sister. The only clue to finding her is a lodestone left to him by his father before he vanished. The lodestone tugs Ray towards a medicine show train bursting with astounding characters. But something dark is following the train. Something that wants to steal people's spirits. How long before Ray realizes it? And can he and his new friends do anything to stop it?--P. [4] of cover.