When the Air National Guard receives an emergency call for help from a remote Arctic research station in Greenland, Senior Master Sergeant Dan Cameron is chosen to lead the rescue mission. In an attempt to combat climate change, the scientists have genetically engineered an aquatic biofilm capable of generating oxygen and lowering the temperature of the underlying seawater, producing environmental conditions that awaken an organism that has lain dormant beneath the ocean floor for millions of years.

Sani Natonaba's ancestors have lived in these canyons for more than 700 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.

When the body of Hunter Gearhardt washes up on the banks of a seasonal river outside of Pomacochas, Peru, with only samples of vegetation, a handful of feathers, two black- and gray-streaked rocks, and a golden headdress of indeterminate origin in his possession, his grieving father launches an expedition to determine how his son died. The party uses these clues to divine Hunter’s route into the jungle, where they find a surviving offshoot of a primitive tribe, long thought to be extinct, and something far more sinister, something that’s been able to avoid discovery for eons for one simple reason: No one leaves the rainforest alive.

A stranger staggers out of the wilderness under the cover of a blizzard and stumbles into a diner full of people. He collapses in the entryway, unzips his jacket, and allows the object hidden inside to fall out. Screaming commences.

On a desolate beach in far northern Scotland, the winter storms have been washing up all manner of things since time began. But buried in the centre of one smaller iceberg is a shard of ancient Viking pottery telling a partial tale of a hidden mysterious island beyond the ice and mist, that was home to a great treasure and even greater horrors. Thawing in the same block of ice was a rotting flap of skin that refused to be identified but had similar skin patterns to a creature not seen for 100 million years.

The fossilized remains of a previously unclassified hominin species are discovered in the Altai Mountains, prompting teams of scientists from around the globe to converge upon this isolated region of Siberia in search of further evidence to corroborate the revolutionary theory that a third protohuman ancestor coexisted with Neanderthals and primitive Homo sapiens. What awaits them is anything but extinct.

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. When a local girl goes missing, Karl realizes he and the other two survivors are her only hope.

When US border patrol agent Christian Rivera discovers the body of an undocumented alien in the middle of the vast Sonoran Desert with three enigmatic words carved into her flesh, presumably by her own hand, it triggers a frantic search for the remainder of her party: a group of 25 men and women who have inexplicably vanished into the desert.

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 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.

More than 75 years ago, five Nazi scientists embarked upon an expedition into the frozen Himalayas in search of the origins of the Aryan race. What they found instead was something beyond their wildest imaginations--a secret they would sooner take to their graves than risk releasing upon an unsuspecting world.

Alex Hunter - in the mission that turned him from a normal man into the weapon known as the Arcadian - and the elite team of soldiers known as the Hotzone All-Forces Warfare Commandos must enter a hostile country to rescue a defected Chechen researcher from the centre of a country at war. But the HAWCs are not the only ones looking for the rogue scientist and the mysterious package he carries with him. A brutal and relentless killer and his death squad are on the trail, too - and they bring a savagery with them that Hunter and his team have never witnessed before in modern warfare.

100,000 years ago the object hit the lake at the deepest point, quickly sinking into its mile-deep Stygian darkness. The sheets of ice closed, time moved on and the land forgot. But over the centuries, legends grew of people vanishing, of strange, deformed animals and of an unexplained luminescence down in the lake depths. When Marcus Stenson won the lucrative contract to create a sturgeon fish farm on the site of disused paper mill on the shore of Lake Baikal, he thought he had won the lottery and refused to listen to the chilling folktales....

The world’s food supply grows aggressively, occupying every inch of earth, no matter how inhospitable. World hunger is averted. Humanity flourishes. RC-714 is digested, absorbed…and passed on. The Change affects small fast-breeding mammals first. They multiply with the same aggressive speed as the ExoGen plants, but an insatiable hunger drives them to violence. A war between species breaks out. When RC-714 reaches humanity, along with every other large creature on the planet, civilization implodes.

Down there, beyond the deepest caves, below the crust and the mantle, there is another world. An old woman locked away in a Russian asylum has a secret - knowledge of a 500-year-old manuscript written by a long-dead alchemist that will show a passage to the mythical centre of the Earth. She knows it’s real because 50 years ago, she and a team travelled there. And only she made it back. Today, caving specialist Mike Monroe leads a crew into the world’s deepest cave in the former Soviet Union.

There’s something growing deep in the old Angel Mine - something the Native Americans warned us about - And now it’s rising again. Mitch Taylor, ex-Special Forces medic, is seeking a quiet life in the town of Eldon. Tragedy has dogged his life, and he sees the small friendly place as a second chance. But buried deep below the friendly smiles and quaint painted houses is an old abandoned mine that holds a legend of an ancient and terrible god. In the mine’s labyrinthine depths, something has been growing, something from a time of myth when ancient gods strode the Earth.