The long-awaited sequel to the critically acclaimed thriller, FragmentDeep beneath the Ural Mountains, in an underground city carved out by slave labor during the darkest hours of the Cold War, ancient caverns hold exotic and dangerous life-forms that have evolved in isolation. Cut off from the surface world, an entire ecosystem of bizarre subterranean species has thrived undetected-until now. Biologists Nell and Geoffrey Binswanger barely survived their last encounter with terrifying, invasive creatures that threatened to engulf the planet. They think the danger is over until a ruthless Russian tycoon lures them to his underground metropolis, where they are confronted by a menagerie of biological horrors and voracious predators. That are rising up from the bowels of the Earth to consume the world as we know it.