Overview: Defence barrister Robert Rinder reviews two more real-life cases. When Liz and Jonathan Speirs were approached by friend and neighbour Keith Cameron to invest in a telecoms business, the offer seemed too good to be true. Sure enough, Keith was a conman with just one thing on his mind - scamming them out of as much cash as possible. Plus, the story of trainee motor mechanic Billy Dove, whose night out with friends in 2011 ended in tragedy when a fight broke out with a gang outside a nightclub and Billy was fatally stabbed.