Jack Ruby, the man who killed Lee Harvey Oswald on live television, has long been dismissed as a deranged loner. However, new evidence suggests that he was a seasoned mobster with links to organized crime. There is compelling evidence that Ruby was a key figure in the plot to attack President John F. Kennedy's motorcade. His behavior in the months following the assassination suggests that he murdered Oswald because he had been 'encouraged' to do so by people he was in no position to defy.