Evolutionary zoologist Nick Cutter discovers prehistoric creatures; the world is turned on its head, humanity faces a threat to its very existence. Unexplained anomalies rip holes in the fabric of time, allowing creatures from the very earliest stages of Earth's development to exist in the modern world. Primeval combines the dazzling special effects of Walking With Dinosaurs with a haunting love story, and asks a terrifying question - has mankind come to the end of the evolutionary road?