A long-simmering merchant conflict has turned into a war of assassination, and the PCs are called in to prevent an attempt to murder the daughter of one of the merchants. They lead her yuan-ti would-be killer on an overland chase through a canyon called Ehlonna’s Scar, which contains surprises of its own.

Folks have been vanishing from the Stink, a disease-filled rubbish quarter of Sunhill. City officials recruit the heroes to investigate the disappearances, putting the PCs on the trail of fiendish Locathahs, followers of Incabulos, with ill plans for the surface world. Dungeon adventure in a sewer.