Danny Caulfield’s quiet Christmas break from Wilsons Academy, the school for spies, is shattered by gunshots and a heartrending discovery about his parents, and he is called back to Wilsons to prepare to go undercover to protect the Treaty Stone that keeps peace between the Upper and Lower Worlds.
- ISBN: 9780385738200
- Author: McNamee, Eoin
- Published: 2011 , Wendy Lamb Books
- Themes: Christmas, Detective, discovery, holidays, parents, Peace
- Descriptors: Europe, Fantasy, Intermediate (ages 9-14), Northern Ireland (UK)
- No. of pages: 311