The Pathfinder heroes take on the dreaded Hellknights! Having identified the serial killer stalking Korvosa's streets, Seoni and her friends must undertake their most foolhardy quest yet - sneaking into a Hellknight fortress! Once inside, they'll need to battle devils and infernal traps in order to search a wizard's workshop for clues. But infiltrating the stronghold of a knightly order powerful enough to enslave devils will prove anything but simple. Battle and brimstone overflow in this sinister adventure from Pathfinder co-creator James L. Sutter (Pathfinder Hollow Mountain, The Redemption Engine), with art from Ediano Silva (Grimm Fairy Tales, Hellchild: The Unholy). Contains pull-out poster map and official Pathfinder RPG bonus encounter!