Foul Delvings

Publisher's blurb: A stomach churning adventure for 3rd to 6th level characters. Something foul is afoot beneath the streets of the city. The characters investigate a missing laborer only to discover a duergar mining operation in the city sewers. Can the characters stop the duergar before they bring the city walls crashing down upon their heads? This short adventure can introduce a new campaign villain or deliver a total party kill.