A remote military research station in Utah sends out afrantic 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 hasbeen annihilated. The land is entirely sterile - and the blight is spreading. 

To halt the inevitable, Commander Gray Pierce and Sigma mustunravel a threat that rises out of the distant past, to a time when Antarcticawas green and all life on Earth balanced upon the blade of a knife. Followingclues from an ancient map rescued from the lost Library of Alexandria, Sigmawill discover the truth about an ancient continent, about a new form of deathburied under miles of ice. From millennia-old secrets out of the frozen past tomysteries buried deep in the darkest jungles of today, Sigma will face itsgreatest challenge to date: stopping the coming extinction of mankind. But isit already too late?

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