In the multiple parallel universes of the Twelve Related Worlds, only an
enchanter with nine lives is powerful enough to control the rampant
misuse of magic--and to hold the title Chrestomanci. . . .
Cat and Christopher Chant make the most unusual friends. Christopher
befriends a boy with terrible karma in a mansion where everything keeps
changing. Cat meets a girl whose family of rogue witches is hiding
shocking secrets. Will the Chrestomanci be able to sort out the tangle
of mysteries and magic?