The first of a two-part programme in which celebrities embark on an emotional journey to discover how their ancestors coped with serving time in Victorian prisons. Comedian Johnny Vegas finds out how one of his forebears spent time behind bars for stealing, and that the man's alcoholic wife was a persistent offender. Broadcaster Mariella Frostrup hears the story of her great-great-grandfather, an entrepreneur who resorted to fraud when the economy crashed in the 1870s.