The fascinating thing about The Islands of Chaldea is not that it is Diana Wynne Jones’s last book but that she died with it unfinished and it was completed and published posthumously. DWJ’s younger sister Ursula has given fans an extraordinary gift by seamlessly integrating an ending to the unfinished manuscript. We will never know if it is the ending Diana would’ve written – because she left no clues, no notes, and an entire committee of family and friends brainstorming for hours could not figure out what she might have intended for the story. Nevertheless, Ursula’s ending is fitting and satisfying and a wonderful tribute to Diana’s memory and the power of sisterhood.