For thousands of years, civilizations believed in mythical beasts – Dragons, Cyclops, Giants, Vampires and Sea Monsters. They still fascinate us today. But where did the stories of these fabled creatures come from? How much truth lies behind the legends? And what can these myths tell us about the medieval and ancient peoples that created in them? This series combines action-packed location filming with experts in archaeology and paleontology with CGI animation to unearth the secrets behind some of the most famous and terrifying mythical beasts.