Pathfinder Adventure Path: Council Of Thieves #3 - What Lies In Dust

The Pathfinder Lodge in the city of Westcrown has laid dormant for a century since revolution thrust the Empire of Cheliax into the hands of a new devil-worshipping aristocracy, sealed with magical locks and wards to protect the secrets within. One such secret holds the key to defeating the shadow creatures infesting Westcrown.