Kurt and Joe tangle with the most determined enemy they've ever encountered when a ruthless power broker schemes to build a new Egyptian empire as glorious as those of the Pharaohs'. Part of his plan rests on the manipulation of a newly discovered aquifer beneath the Sahara, but an even more devastating weapon at his disposal may threaten the entire world: a plant extract known as the black mist, found in the City of the Dead and rumored to have the power to take life from the living and restore it to the dead. With the balance of power in Africa and Europe on the verge of tipping, Kurt, Joe, and the rest of the NUMA team will have to fight to reveal the truth behind the legends-but to do that, they have to confront in person the greatest legend of them all: Osiris, the ruler of the Egyptian underworld.