A One-Round Living Greyhawk Theocracy of the Pale Regional Adventure
From the introduction:
All citizens of the Pale know their place, but not all are content. In the foothill city of Landrigard, hearts can be as hard as stone, as dark as coal, or as brilliant as a diamond. And when a crisis squeezes these stones, the blood of Oeridians, Flan, and dwarves stains the streets.
An investigative urban adventure for [characters levels] 2 - 8.