Diana Wynne Jones

Sophie has the great misfortune of being the eldest of three daughters, destined to fail miserably should she ever leave home to seek her fate. But when she unwittingly attracts the ire of the Witch of the Waste, Sophie finds herself under a horrid spell that transforms her into an old lady. Her only chance at breaking it lies in the ever-moving castle in the hills: the Wizard Howl's castle. To untangle the enchantment, Sophie must handle the heartless...

Derk, an unconventional wizard, and his magical family become involved in a plan to put a stop to the devastating tours of their world arranged by the tyrannical Mr. Chesney.

After his grandfather dies, Andrew Hope inherits a house and surrounding land in an English village, but things become very complicated when young orphan Aidan shows up and suddenly a host of variously magical townsfolk and interlopers start intruding on their lives.