In 1964, Ronald Biggs was sentenced to 30 years in prison for his part in robbing a British mail train. At the time, it was the biggest robbery ever carried out and it made worldwide headlines. But little more than 13 months later, Biggs made a daring escape and went into hiding. His extraordinary story involves plastic surgery, kidnapping, and his eventual return to prison in England. But for four long years, nobody knew where Biggs was. He seemed to vanish without a trace…