Fourteen-year-old orphan Henry Grim’s schooling at the prestigious Knightley Academy continues, as he and some friends discover an old classroom filled with forgotten weapons which lead them into a dangerous adventure.
- ISBN: 9781416991458
- Author: Haberdasher, Violet
- Published: 2011 , Simon & Schuster/Paula Wiseman Books
- Themes: Adventures, boarding schools, knights, Orphans, School, secret society
- Descriptors: England (UK), Fantasy, Intermediate (ages 9-14)
- No. of pages: 512