Over 60,000 years ago, the first modern humans left their African homeland and entered Europe, then a bleak and inhospitable continent in the grip of the Ice Age. But when they arrived, they were not alone: the stocky, powerfully built Neanderthals had already been living there for hundreds of thousands of years. So what happened when the first modern humans encountered the Neanderthals? Did they make love or war?

When Frank Walsh, a hunter, and collector of rare and exotic animals, bags a priceless white jaguar for a zoo, he figures it'll be smooth sailing to a big payday. But the ship bearing Frank's precious cargo has two predators caged in its hold: the cat and a political assassin being extradited to the U.S. After the assassin breaks free and then frees the jaguar, Frank feverishly stalks the ship's cramped corridors in hot pursuit of his prey, right...