Dirk Pitt is searching for a treasure on the River Niger. Pitt, along with his buddy Al Giordino have to thwart the attempted assassination of a beautiful U.N. scientist who is investigating a disease that is driving thousands of North Africans to death. The suspected cause of the raging epidemic is a vast, fast spreading pollution that threatens to extinguish all life in the world's seas. Racing to save the world from environmental catastrophe, Pitt...