Pathfinder Adventure Path: Wrath Of The Righteous Part 4 - The Midnight Isles

An audience with the Crusader Queen leads the heroes through a mysterious portal to an otherworldly fortress that lies betwixt Golarion and the demonic Abyss. Bringing the fight for the Worldwound to its demonic source means dealing with the cultists of Deskari, demon prince of locusts, who infest the castle like a swarm of insects.