5/5 How the age's great technological advances were used to capture criminals.
Tony Robinson tells the story of Thor Heyerdahl’s epic raft journey across the Pacific.
5/5 Only in 1928, an anonymous letter from Sydney reveals the facts of the case.
1/4 Is there a link between the history of eating and speaking? Stephen Fry investigates.
1/6 Michael Bentine recalls visits to Australia and New York and some outrageous friends.