Charlie & his friends are back in danger & the balance of power between the Children of the Red King has never been more dangerous. Billy finally gets his longed-for parents but he soon wishes he hadn't when the oaths he's forced to sign come flying through the air at him. Charlie is haunted by a ghostly horse mad with rage over an ancient wrong that happened in the sparkling Castle of Mirrors. The castle was petrified from stone into glass by the sorcerer Yorath in a terrible fire. Charlie's friend Olivia is haunted too
- but no one knows her new secret. Even with the power of Tancred's storms & Lysander's ancestors Charlie Bone is running short of allies
- just when he needs them most.