After narrowly averting a city-wide disaster and thwarting the plans of the Council of Thieves, the heroes must consult a legendary hag -- the Mother of Flies -- who knows the many secrets of the thieves guild at the center of so many problems in the city of Westcrown. With the crone's unsettling advice, the heroes can infiltrate the trap-ridden headquarters of the Council of Thieves, defeat the vampiric force within it, and lift the curse of the shadowy menace from the beleaguered city. A Pathfinder adventure designed for character levels 11-12 The Council of Thieves Adventure Path is the first to take full advantage of the new Pathfinder Roleplaying Game rules, and works with both the Pathfinder RPG and the standard 3.5 fantasy RPG rules set. This volume of Pathfinder also includes "The Ecology of the Thieves Guild," a comprehensive guide on how thieves guilds work and how to use them effectively in a campaign, including two sample thieves guilds from Korvosa and Port Peril.