Fingerprints of the Fiend

Publisher blurb: When a retired Pathfinder's nephew goes missing after allegedly discovered the fabled city of Rachikan of the ancient Jistka Imperium, he turns to the Society for help. Now you've been sent to the coast of devil-tainted Cheliax to uncover the missing nephew's whereabouts and to, quite possibly, uncover one of the most sought-after legendary cities on Golarion. But you have to move quick! The Aspis Consortium is rumored to be racing to the site ahead of you and their involvement could spell disaster for the Pathfinder Society.