It was one of the most notorious crimes in British criminal history - the Great Train Robbery in 1963 shocked the nation for its audicity and violence. But the story didn't end there.
The most infamous of the robbers was Ronnie Biggs - constantly in the headlines while on the run from prison and eventually returning to jail in Britain before being released on compassionate grounds.
But what of his long-suffering wife - Charmian Biggs, and her story? Well that's the subject of a new five part ITV drama - "Mrs Biggs". Fred's been talking to Charmian and Sheridan Smith, actress who plays her in the new series.