Matt Baker and Alex Jones are joined by Nick Ross who talks about his new book, Crime, while some proud gardeners open up their backyards to the public as part of a nationwide scheme. Find out what it takes to be a hero as one of the 'Woolwich Angels', Ingrid Loyau-Kennett, joins the programme. Plus, Larry Lamb meets two of the men who helped solve the Great Train Robbery 50 years ago and Marty Jopson tests out the hardest man-made material on the planet.