Secrets of the Serpent's Teeth

From the introduction: The tunnels beneath Freeport have always held secrets, or at least since the time of the valossan empire. Now, the PCs are asked to investigate reports of horrors deep beneath the city by the Captain’s Council. User summary: The scenario is distributed as an archive containing: 12-page PDF scenario 56-page PDF "stat blocks" (at various APLs) 4-page PDF adventure maps (print-and-play grids) four JPG map files