A One-Round Living Greyhawk Ratik Regional Adventure
From the introduction:
A memorable concert by Bilsby Songweaver at the re-opening of the Pregnant Mule Inn is interrupted and the characters become involved in tracking down the thieves who have stolen the Gem of the North, the symbol of the sovereignty of Ratik.
This is the second adventure in the Sparkling Gem series.
An adventure for characters level 3 - 8.