Amy Dorrit spends her days earning money for the family and looking after her proud father who is a long term inmate of Marshalsea debtors' prison in London. Amy and her family's world is transformed when her employer's son, Arthur Clennam, returns from overseas to solve his family's mysterious legacy and discovers that their lives are interlinked.

Claire Foy, Matthew Macfadyen, Tom Courtenay, Emma Pierson, Alun Armstrong, Judy Parfitt, Maxine Peake, Andy Serkis, Eddie Marsan, Freema Agyeman, Janine Duvitski, James Fleet, Bill Paterson, Sue Johnston, Ruth Jones, Pam Ferris, Jason Watkins, Anton Lesser, Rosie Cavaliero, Ron Cook, Alex Wyndham, Russell Tovey, Amanda Redman, Eve Myles, Jason Thorpe, Zubin Varla, John Alderton, Georgia King, Arthur Darvill, Geoffrey Whitehead, Kingsley Frances-Gray, Sebastian Armesto, Bel Powley