From the publisher's website:
The Pathfinder Society once again sends a team of agents into the deadly ruins of Rachikan in western Cheliax. This time, however, the Pathfinders must infiltrate a Hellknight encampment to gain access to the lost city's lower levels. Can they work their way past the suspicious soldiers and survive the ancient terrors that lurk below? Fury of the Fiend is the spiritual sequel of Fingerprints of the Fiend, though the scenarios can be played in any order.
A Pathfinder Society Scenario designed for 7th to 11th level characters (Tiers: 7-8 and 10-11).
This scenario is designed for play in Pathfinder Society Organized Play, but can easily be adapted for use with any world. This scenario is compliant with the Open Game License (OGL) and is suitable for use with the Pathfinder Roleplaying Game.