The Sixth Extinction

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The NEW YORK TIMES bestselling author returns with a gripping, high-concept adventure thriller in the Sigma Force series - for fans of Dan Brown and Michael Crichton. A remote military research station in Utah sends out a frantic distress call, ending with a chilling final command: Kill us all! Personnel from the neighbouring base rush in to discover everyone already dead - and not just the scientists, but every living thing for 50 square miles has been annihilated. 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