We're at the Anniversary Games in London and meet the new women's 100m hurdles world record holder, Kendra Harrison. Usain Bolt and Shelly-Ann Fraser-Pryce talk about their hopes of retaining their Olympic titles in Rio and we hear from a Brazilian journalist about how the Host City is preparing for the Games against a background of security issues, the threat of the Zika virus and questions over the Games venues. And we complete our journey through the Games of the modern Olympic era as we look back on the 2012 Olympics in London.