NEW YORK TIMES BESTSELLER • In this riveting, high-octane thriller, an ancient creature is inadvertently released to wreak havoc on the inhabitants of a desolate arctic landscape.

Alaska’s Federal Wilderness Zone is one of the most dangerous and inhospitable places on Earth. For paleoecologist Evan Marshall, an expedition to the Zone offers an once-in-a-lifetime opportunity to study the mounting effects of climate change. But once there, Marshall and his intrepid team make an astonishing discovery: an enormous prehistoric animal encased in solid ice. Despite repeated warnings from the local village, and Marshall’s own mounting concern, the expedition sponsors want the creature cut from the ice, thawed, and revealed on a live television spectacular…But then the creature disappears and an unspeakable horror is unleashed.