Mrs Biggs is the true story of the woman behind Britain's most famous villain, Great Train Robber Ronald Biggs. Over five, hourâ€Â?long episodes we go on a wee jaunt with her, from naïve young woman to reluctant gangster’s moll; from a stifling, choking life at the hands of an overbearing father, to the joy of freedom and motherhood. Mrs Biggs gives us the inside story on one of the most infamous crimes of the twentieth century; but more than anything it is a sweeping love story told across three decades and from one side of the world to the other. It also gives us a rather malevolent Daniel Mays with mental hair. Sheridan Smith stars as the titular character.