A One-Round Living Greyhawk Duchy of Urnst Adventure
From the introduction:
The heroes must race against time in order to locate and stop a noble from realizing her apotheosis. An adventure well suited for diplomats, rogues and combat monsters.
An adventure for average party levels 10 through 16.
This errata was provided for the scenario:
On page 8, Encounter Two:
Those PCs or players who sing the song for Maria are rewarded with the loan of a Rope of Climbing for the adventure, which must be returned at the end of the adventure.