In the crumbling remains of a tunnel that was part of the Underground Railroad, a mysterious artifact reveals one of the darkest secrets of Africa's ancient past. Intrigued by the strange, encrypted stone, archaeologist Annja Creed opens a door to a world--and a legend--bound by a fierce and terrible force. She is not alone in her pursuit of the impossible. A bloodthirsty African warlord, and an international corporate magnate exploiting a land, a...