From the back of the book:
The Dead Will Have Their Revenge
Ten years to the day after the most horrible injustice in Absalom’s history, an implacable spirit returns to have his vengeance upon those who sent him to the gallows. Unfortunately for the heroes, they are among the jury of the damned, and come dawn they will all hang if they fail to find the true culprit.
Hangman’s Noose is an urban-based adventure for 1st-level characters compatible with the world’s most popular fantasy roleplaying game. This adventure includes details on the terrible crime, those who took part in its cover-up, and the crumbling courthouse where the crime, trial, and execution all took place.
This adventure is set in the metropolis of Absalom, one of the largest cities in the PATHFINDER CHRONICLES campaign setting, but it can be easily adapted for use in any setting. For more information on this city, check out U1: Gallery of Evil and the Pathfinder Chronicles Gazetteer.