A One-Round Living Greyhawk Core Adventure
From the introduction:
Powerful residents of the Gem of the Flanaess suspect that someone on the Directing Oligarchy may be working with Greyhawk's greatest enemy. As their hands are tied and their moves are watched, it falls to a group of heroes to uncover this plot and follow wherever it leads. Parties skilled in stealth, guild or force welcome.
A one-round Core adventure set in the Domain of Greyhawk for characters level 1 to 15.
The second intrigue of "Honor Among Thieves."