“James Rollins knows adventure.”

—Chicago Sun Times

With The Doomsday Key—the latest Sigma Force blockbuster from New York Times bestselling author James Rollins—the critically acclaimed thrill-master continues to dazzle with an electrifying combination of history, religion, science, and adventure. The hero of Map of Bones, The Black Order, and other exceptional Rollins roller-coaster rides, Commander Pierce returns to solve a centuries-old secret, one coded in prophecies of doom—in a story that fans of Michael Crichton, Douglas Preston, and Indiana Jones will not be able to put down!