Australia is an island continent with a breathtaking wealth of wildlife found nowhere else in the world. As the driest inhabited continent on Earth, it is a world apart, a place where successive invasions of people have made the greatest impact on its wildlife and wilderness areas. Each film is a detective story, delving into Australasia's hidden secrets to explain why its wildlife is so special. The continent's top predators are giant snakes and lizards, not mammals, and it is the only place on Earth still dominated by marsupials. Its wildlife is an astonishing mix of the surprising, the strange and the deadly.