Stephen tells the 180-million-year story of dinosaurs, travelling back in time via amazing computer-generated worlds. In this edition he encounters the Diplodocus and the Allosaurus.
Stephen finds himself in the Early Cretaceous period, 125 million years ago - the era that saw an explosion in dinosaur diversity - and encounters the terrifying Utahraptors.
Stephen Fry heads back 66 million years, to the apocalyptic end of dinosaur life, and uncovers secrets of the era to see how plant eaters fought back against predators like the T-rex.
