<p><strong>From #1 <em>New York Times </em>bestselling author James Rollins, the latest riveting, deeply imaginative thriller in the Sigma Force series, told with his trademark blend of cutting-edge science, historical mystery, and pulse-pounding action.</strong></p><p>It begins in Africa . . .</p><p>A United Nations 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. The insidious phenomenon is spreading from a cursed site in the jungle -- known to locals as the Kingdom of Bones --and sweeping across Africa, threatening the rest of the world.</p><p>What has made the biosphere run amok? Is it a natural event? Or more terrifyingly, did someone engineer it?</p><p>Commander Gray Pierce and Sigma Force are prepared for the extraordinary and have kept the world safe, vigilance for which they have paid a tragic personal price. Yet, even these brilliant and seasoned scientific warriors do not understand what is behind this frightening development--or know how to stop it. As they race to find answers, the members of Sigma quickly realize they have become the prey.</p><p>To head off global catastrophe, Sigma Force must risk their lives to uncover the shattering secret at the heart of the African continent--a tr