The Doomsday Key: A Sigma Force Novel

In this electrifying adventure from James Rollins, the #1 New York Times bestselling author of the Sigma Force series, Commander Gray Pierce returns to solve a centuries-old secret, one coded in prophecies of doom.

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 ...