The crash of a U.S. military research satellite in the remote wilds of Mongolia triggers an explosive search for the valuable cargo it holds: a code-black physics project connected to the study of dark energy, the energy associated with the birth of our universe. But the last blurry image from the falling satellite captures a chilling sight: a frightening look into the future, a view of a smoldering eastern seaboard of the United States in utter ruin.
At the Vatican, a mysterious package arrives for the head of Pontifical ancient studies, sent by a colleague who vanished a decade earlier. It contains two strange artifacts: a skull scrawled with ancient Aramaic and a tome bound in human skin. DNA testing reveals both are from Genghis Khan—the long-dead Mongol king whose undiscovered tomb is rumored to hold the vast treasures and knowledge of a lost ancient empire.
Commander Gray Pierce and Sigma—joined by a pair of Vatican historians—race to uncover a truth tied to the fall of the Roman Empire, to a mystery bound in the roots of Christianity's origins, and to a weapon hidden for centuries that holds the fate of humanity.

Portrait

James Rollins is the #1 New York Times bestselling author of international thrillers that have been translated into more than forty languages. His Sigma series has been lauded as one of the “top crowd pleasers” (New York Times) and one of the “hottest summer reads” (People magazine). In each novel, acclaimed for its originality, Rollins unveils unseen worlds, scientific breakthroughs, and historical secrets—and he does it all at breakneck speed and with stunning insight. He lives in the Sierra Nevada.