A UN relief team in a small village in the Congo makes an alarming discovery. An unknown force is leveling the evolutionary playing field. Men, women, and children have been reduced to a dull, catatonic state. The environment surrounding them - plants and animals - has grown more cunning and predatory, evolving at an exponential pace. To head off global catastrophe, Sigma Force must risk their lives to uncover the shattering secret at the heart of the African continent... Sigma Force, 16