Episode 1: "A Bridge to the Unknown", by Arthur Conan Doyle, dramatised by Chris Harrald: The hot-headed Professor Challenger claims that extinct species of animals are still to be found living on an isolated Amazonian plateau. Dr Summerlee, Lord John Roxton, and the intrepid reporter Edward Malone, find themselves committed to a journey of a lifetime. Episode 2: "Our Eyes Have Seen Great Wonders", by Arthur Conan Doyle, dramatised by Chris Harrald: Professor Challenger and his team are marooned on the isolated Amazonian plateau, at the mercy of dinosaurs and a murderous tribe of hominids.
In this classic tale of wartime espionage, Richard Hannay's living nightmare begins at home with the discovery of a dead man in his London flat. He becomes an innocent on the run, pursued by the police for a murder he didn't commit.