The Islands of Chaldea is a bittersweet little book-mostly because it is Wynne Jones' last. It was published posthumously, and it wasn't completely when it was found, and thus it had to be completed by her sister, herself a children's author. It takes place in an alternate universe Great Britain, where all the countries are separated by water-but water is not the only thing that separates them. Culture does too-and a magical barrier put up by Logra (England) ten years before. It concerns a quest involving the heir to a powerfully gifted (in magic, of course) family named Aileen, and her companions-Ivar, a prince of Skarr (her Scotland), Aunt Beck, her aunt and a powerfully gifted wise woman, and Ogo, an stranded Logran-to take down Logra's barrier. Well, originally. They also pick up passengers from the three islands they visit in the meantime (Bernica, her representation of Ireland, Gallis, her representation of Wales and Lone, maybe a representation of Orkney and the Isle of Man).