Matthew Parris presents the biographical series in which his guests choose someone who has inspired their lives. Travel writer Dervla Murphy discusses the life of another fearless woman traveller, Freya Stark. Stark roamed across Arabia and Persia, frequently risking her life, and during the Second World War set up a pro-British intelligence network in Cairo. She was brave but also infuriating, and was liable to make impossible demands on her friends, such as John Murray, who joins the discussion.