<p><strong>In this electrifying adventure from James Rollins, the #1 <em>New York Times </em>bestselling author of the Sigma Force series, Commander Gray Pierce returns to solve a centuries-old secret, one coded in prophecies of doom.</strong></p><p>At Princeton University, a famed geneticist dies inside a biohazard lab. In Rome, a Vatican archaeologist is found dead in St. Peters Basilica. In Africa, a US Senator’s son is slain outside a Red Cross camp. Three murders on three continents bear a horrifying connection: all the victims are marked by a Druidic pagan cross burned into their flesh.</p><p>The bizarre murders thrust Commander Gray Pierce and Sigma Force into a race against time to solve a riddle going back centuries, to a ghastly crime against humanity hidden within a cryptic medieval codex. The first piece of the puzzle is discovered inside a mummified corpse buried in an English peat bog-a gruesome secret that threatens America and the world.</p><p>Aided by two women