"In the remote mountains of Croatia, an archaeologist makes a strange discovery: a subterranean Catholic chapel, hidden for centuries, holds the bones of a Neanderthal woman. In the same cavern system, elaborate primitive paintings tell the story of an immense battle between tribes of Neanderthals and monstrous shadowy figures. Who is this mysterious enemy depicted in these ancient drawings, and what do the paintings mean? Before any questions can...

After the mysterious disappearance of their parents, Marty and Grace go to live with their scientist uncle and accompany him on what soon becomes an increasingly dangerous expedition to New Zealand to track a giant squid.

"Off the coast of tropical Mauritius, an ecological catastrophe with global implications is occurring. The ocean's floor is collapsing at a rapid rate. World-champion free diver and marine biologist Carrie Anderson joins a scientific expedition determined to discover the cause-and how to stop it. But what they uncover is even more horrific. Deep beneath the surface, something is awake. Something hungry. Something...cold."--

"To stop the world from burning, it's up to Sigma Force to uncover a secret buried at the heart of our planet. The Titan Project--an international research station off the coast of Australia--discovers a thriving zone of life in an otherwise dead sea. The area teems with a strange bioluminescent coral that defies science, yet holds great promise for the future. But the loss of a military submarine in the area triggers a brutal attack and sets in motion...