A stand-alone novel of magic and adventure by the renowned fantasy author Diana Wynne Jones, who also wrote Howl's Moving Castle and the Chrestomanci books. Almost finished upon her death in 2011, the manuscript was completed by Diana's sister Ursula Jones, an acclaimed novelist and actress. Publishers Weekly called The Islands of Chaldea "a story to cherish" in their starred review.

Aileen comes from a long line of magic makers, and her aunt Beck is the most powerful magician on Skarr. But in this coming of age fantasy, Aileen worries her own magic has yet to reveal itself, even though she is old enough and it should have by now. When Aileen is sent over the sea on a mission for the King, she worries that she'll be useless and in the way. A powerful, magical talking cat changes all of that—and with every obstacle Aileen faces, she becomes stronger and more confident, until her magic blooms. This stand-alone fantasy adventure for kids, by the beloved and acclaimed author of such classic fantasy novels as Howl's Moving Castle and the Chrestomanci books, will be welcomed by fans old and new. "Jones's imaginative vigor is unabated in this last, picaresque novel; her deft, fluid style and penchant for precise, characterful description are amply present," proclaimed The Horn Book.

A royal mission across dangerous seas is no place for a girl with no magic. Or is it the perfect place?

An Unlikely Hero: Aileen is sure she’s a failure, born into a magical family with no magic of her own. But when the King needs her, she must find a different kind of strength.
A Mysterious Animal Companion: A huge, ugly, and powerfully magical talking cat named Plug-Ugly joins the quest, and he seems to know more about Aileen’s destiny than she does.
An Epic Quest: The journey will take them across the magical Islands of Chaldea, from the misty shores of Skarr to strange new lands, in a race to break a powerful spell.
Found Family: Aileen is joined by a spoiled prince and an overlooked outcast. They’ll have to learn to trust each other if they hope to survive the journey ahead.
A Final Masterpiece: From the beloved author of Howl’s Moving Castle, this stand-alone fantasy was the last book from the legendary Diana Wynne Jones, completed by her sister.