A One-Round Living Greyhawk Regional Adventure set in The Free and Independent City of Dyvers
From the introduction:
In response to a growing demand for fighters in the Circle of Crimson Stone, there has been an alarming increase in the number of indentured servants being thrust into the fighting ring. Some believe that not all these indentured servants were legally obtained. You have been asked to conduct an undercover investigation.
A one-round Dyvers regional adventure for characters level 1 - 14.
This adventure is not recommended for [player characters] that rely heavily on magical or other material items.