Knave of Box Town (2006)

A One-Round Living Greyhawk Dyvers Regional Adventure

From the introduction:

The war with Blackthorn has taken a turn for the worse, but that has not slowed the myriad machinations in the city of sails from continuing forward. Lord Grandhearth would reward those adventurers that saved his daughter, while word of Colonel Dolorrak’s kidnapped niece has surfaced. Word on the street is that there is a new king of Box Town, the Circle of Crimson Stone is holding public death matches, and worse, the Jackyll has supposedly returned to Dyvers.

An investigatory regional adventure of charity or cruelty set in the Free and Independent City of Dyvers for [character levels] 2 - 12.