Unit 51 Series

They are not human. They are not natural. They are not friendly. At a research station in Antarctica, five of the world's top scientists have been brought together to solve one of the greatest mysteries in human history. Their subject, however, is anything but human. Deep beneath the ice, the submerged ruins of a lost civilization hold the key to the strange mutations that each scientist has encountered across the globe. When a series of sound waves trigger the ancient organisms, a new kind of evolution begins. A long-extinct life form is reborn.

In a Mexican temple, archaeologists uncover the remains of a half-human hybrid. They believe it is related to the creature in Antarctica, a dark thing of legend that is still alive-and still evolving. They believe it needs a new host to feed, to mutate, to multiply. They're right. And they're next. And the human race might just be headed for extinction.

In a research hangar in Virginia, a Unit 51 team studies an ancient but long-dormant virus that can transform human physiology - and turn it into something else.... In the Amazon rain forest, a newly evolving life form known as Subject Z acquires the ability to think conceptually, build elaborate traps, create new carriers - and spawn a new race....