33ZZ SECRET ROOM. This room holds a small desk, an oil lamp, and a bed.
On the desk is a treatise on demonology and diabolism positing Hell as a great walled city surrounded by wilderness inhabited by demons. The last page is a scroll of protection from demons. The book is worth 13000 gold crescents with the scroll intact, 500 with it removed. If sold to an evil cleric of substantial financial means, it is worth 14000 or 1500, respectively.