The sprawling maze of caverns and tunnels beneath the hilltop city of Kaer Maga are home to a host of dangers and mysteries. A dedicated group of guards called the Duskwardens is responsible for protecting Kaer Magans and visitors alike from everything that lurks below. Despite the Duskwardens' best efforts, the influence of one of the vaults has been spreading on to the streets of Kaer Maga. It falls to a group of Pathfinder Society agents to navigate the factions of Kaer Maga to access and strike at the heart of the lurking threat.
Beyond the Halflight Path is an evergreen, replayable scenario designed to provide a flexible adventure that confronts the PCs with a variety of threats more common to higher-level characters. The scenario has nine different possible villains, as well as myriad other options for the GM to customize the dangers that the PCs face.