Charlie Bone and The Castle Of Mirrors (Children of the Red King Book 4)
This is the fourth book in the Charlie Bone series. It continues the story just as well as the others and is still a great book for the whole family. In this book, Charlie thinks he is getting closer to finding his father who has been lost for years. Charlie must also use his powers to help his friend Billy who is being held prisoner by terrible adoptive parents. It takes Charlie as well as his friends to free Billy and discover the truth about the Castle of Mirrors.