The Chestnut Soldier by Jenny Nimmo - 203 pages
The Magician Trilogy #3
Nia's cousin Evan has come to visit to recover from injuries sustained as a soldier. Unfortunately, his visit is used by an ancient "demon" as a chance to possess him. Magician Gwyn and Nia will have to work hard to save Evan and everybody.
This is the final book in the Magician Trilogy. I listened to it on audiobook. While I enjoyed the book, it was probably my least favorite out of the series. It was just longer with more build-up. The other books seemed more succinct in telling the story. Still, it was a good conclusion to the trilogy.