A remote military research station sends out a frantic distress call, ending with a chilling final command: Kill us all! Personnel from the neighboring base rush in to discover everyone already dead-and not just the scientists, but every living thing for fifty square miles is annihilated: every animal, plant, and insect, even bacteria.

The land is entirely sterile-and the blight is spreading.

To halt the inevitable, Commander Gray Pierce and Sigma must unravel a threat that rises out of the distant past, to a time when Antarctica was green and all life on Earth balanced upon the blade of a knife. Following clues from an ancient map rescued from the lost Library of Alexandria, Sigma will discover the truth about an ancient continent, about a new form of death buried under miles of ice.

From millennia-old secrets out of the frozen past to mysteries buried deep in the darkest jungles of today, Sigma will face its greatest challenge to date: stopping the coming extinction of mankind.

But is it already too late?

About the Author

James Rollins is the #1 New York Times bestselling author of international thrillers. His writing has been translated into more than forty languages and has sold more than 20 million books. The New York Times says, " Rollins is what you might wind up with if you tossed Michael Crichton and Dan Brown into a particle accelerator together." NPR calls his work, " Adventurous and enormously engrossing." Rollins unveils unseen worlds, scientific breakthroughs and historical secrets matched with stunning suspense. As a veterinarian, he had a practice in Sacramento for over a decade and still volunteers at local shelters. Nowadays, Rollins shares his home up in the Sierra Nevada Mountains with his two golden retrievers, Echo and Duncan. He also enjoys scuba diving, spelunking, kayaking, and hiking. Of course, he loves to travel and experience new places around the world, which often inspire his next globe-trotting adventure.

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