From publisher blurb: The secret to what created the desert, and how to reverse it is hidden away at a long-abandoned remote monastery. Who knows what other ancient knowledge and treasure is hidden there? Seeker of Knowledge can be used as an adventure in any campaign world, or played as a sandbox in Hellebarde's default setting. Written and tested with Castles and Crusades RPG, notes are provided for conversion to other OSR systems. Seeker of Knowledge can be used stand-alone or as part of the Exterris Adventure Tome AT-5 (plus ONA-17 through ONA-20).