A Two-Round Living Greyhawk Duchy of Urnst Regional Adventure
From the introduction:
Long thought lost, a famed wizard’s correspondence has been located in the hands of thieves. The hunt for the stolen letters leads from Nellix to the Celadon Forest and beyond. Can the thieves be caught before they vanish into the chartless depths of the Gnatmarsh?
A two-round adventure for [characters of levels] 4 - 12.