Return to the deserts of Osirion in this pulse-pounding sequel to Paizo's best-selling Entombed with the Pharaohs! The action starts in the oppressive empire of Cheliax, where the heroes discover a map to an ancient pharaonic treasure called the Pact Stone carved into the chest of a summoned devil. From there it's a race pitting adventurers against evil archaeologists in the depths of a desert tomb dedicated to the ancient pharaohs of Osirion. Only the secret of the Pact Stone Pyramid can stop the rival archaeologists from arising as modern pharaohs of limitless power. Can the heroes negotiate a tomb filled with deadly traps in time? A Pathfinder Chronicles adventure suitable for 8th-level player characters.