Sani Natonaba’s ancestors have lived in these canyons for more than seven hundred years, but they aren’t the only ones. When he awakens to the bleating of his family’s sheep being slaughtered, he learns that something is stalking this isolated corner of the reservation, a predator unlike any he has encountered before, one that attacks with alarming stealth and ferocity.
Only his grandfather knows what lurks outside in the darkness, but a stroke has left him unable to communicate, forcing Sani to embark upon a journey into the distant past to discover the horrible truth. And he’s running out of time. There’s no sign of an end to the killing and already he’s found claw marks and strange footprints around his home.
Sani must decipher the clues hidden a millennium ago by the Anasazi before their mysterious disappearance if he’s to have any hope of surviving the impending confrontation with an ancient enemy that has already hunted his bloodline to the brink of extinction.

IT HAS SURVIVED
At a research station in Antarctica, scientists discovered a strange and ancient organism.
They thought they could study it, classify it, control it. They couldn’t.

IT HAS THRIVED
Six months ago, a secret paramilitary team called Unit 51 was sent to the station.
They thought the creature was dead, the nightmare was over. It wasn’t.

IT HAS EVOLVED
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 . . .

IT LIVES.
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 . . .

IT MUTATES.
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 . . .

IT SPREADS.
In Mexico and Turkey, the men and women of Unit 51 race to uncover a global link between the mutations: a connection as ancient as the oldest tombs on earth-and as alien and unknowable as the universe itself. But time is running out. The infected are growing in number. And the nightmare is going viral.

They are not human.
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 . . .

They are not natural.
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: A misshapen skull in Russia. The grotesque carvings of a lost race in Peru. The mummified remains of a humanoid monstrosity in Egypt . . .

They are not friendly.
When a series of sound waves trigger the ancient organisms, a new kind of evolution begins. Latching onto a human host-crossbreeding with human DNA-a long-extinct life form is reborn. Its kind has not walked the earth for thousands of years. Its instincts are fiercer, more savage, than any predator alive. And its prey are the scientists who unleashed it, the humans who spawned it, and the tender living flesh on which it feeds . . .

An accident during the construction of a tunnel beneath the Bering Strait leads to the discovery of a network of caverns and evidence that hints at the survival of a primitive human species. Led by DARPA technologist Reinhard Thyssen, a team of experts from around the globe is dispatched into the subterranean maze to discover all they can before the caves completely flood.
Something lurks in the darkness, though . . . a creature that has evolved into a predator unlike any the world has ever known, and it’s up to the scientists to make sure that it never reaches the surface. If they can survive that long.

Four teenagers awaken in a scorched cornfield with no memory of how they got there. All they know is that there were five of them when they found the carcass of the mutilated cow.
Forty years later, Eric Devlin sends a cryptic email to the other three survivors: I remember everything.
Karl Doering has spent the majority of his life trying to understand what happened that night and learn the fate of his missing friend. He responds to the mysterious message and finds that Eric has killed himself in a decrepit barn, behind which is a cornfield filled with mutilated cattle.
When a local girl goes missing, Karl realizes that he and the other two survivors are her only hope. To find her they must confront repressed memories so traumatic they’d driven Eric to take his own life . . . and creatures straight out of their worst nightmares.