Kidnap for Ransom; The Trickiest Trade in the World

What would you pay to save a loved one who had been kidnapped? What is the price of a life? Millions of people work, live, and travel in high-risk countries; very few are kidnapped and, of those that are, almost all come home safely - how can this be? Dr Anja Shortland, Reader in Political Economy at King's College London, discusses her new book Kidnap: Inside the Ransom Business.