A One-Round Living Greyhawk Theocracy of the Pale Regional Adventure
From the introduction:
Several adventurers suspected of worshiping illegal deities are suspected to have gone into hiding. The Church of the One True Path needs your assistance in tracking down these miscreants before they can proselytize their heretical ways to the faithful.
A role-playing and diplomatic adventure for characters levels 1 - 15 set in the Theocracy of the Pale.