The 101 year old marathon runner Fauja Singh is a hero in his native India and his adopted home of Britain. Nobody older has finished the race - yet Mr Singh is not in the Guinness Book of Records. 5 live Investigates finds out why some experts refuse to accept his claim to be the world's oldest marathon runner. Plus Adrian Goldberg hears about the woman whose attempts to claim "prizes" has cost her £500,000. And the team investigates the latest money making scheme of a "property guru" who went bust.