Diana Wynne Jones
Author
Series
Chronicles of Chrestomanci volume 6
Summary
Two powerful young enchanters, Cat, the future Chrestomanci, and Marianne, who is being trained to be Gammer of the Pinhoes, work together as friends to try to end an illegal witches' war and, in the process, right some old wrongs.
Author
Series
Chronicles of Chrestomanci volume 3
Summary
"Cat and Christopher Chant make the most unusual friends. Christopher befriends a boy with terrible karma in a mansion where everything keeps changing. Then, Cat meets a girl whose family of rogue witches is hiding terrible secrets. Will the Chrestomanci be able to sort out the tangle of mysteries and magic?