White Robes, Black Hearts: Enigma of the Arcanexus (Revised)

Publisher Blurb:

The only hope of a conquered people is an ancient artifact, and heroes brave enough to find it. This epic length D20 adventure begins in one of the most populous cities in the lands and leads the characters down a long forgotten trail through perilous locations where they must confront fearsome enemies and unmask treacherous "allies." This is the first part of the White Robes - Black Hearts trilogy, though each part of the trilogy is designed to be easily dropped into any fantasy game world, and used with or without the other two products. A well crafted, wide open adventure.