It was a foggy night in London and the city was quiet as usual. The only sound to be heard was the occasional chirping of the city's wildlife. But for one person, this silence was about to be broken.

James was a lonely young man, living hand to mouth in one of London's public housing neighborhoods. Every day was a struggle to make rent and the only joy he found in life was the evenings spent walking around the city seeing the sights. On this particular night, his nightly stroll was taking him through some...