S1, E101: Amy Dorrit lives in the Marshalsea Prison for Debt with her father, William Dorrit, who has been an inmate there for countless years. Amy is employed as a seamstress by the stern and formidable Mrs Clennam. Events are set in motion in the Clennam household when Mrs Clennam's son, Arthur, returns unexpectedly from China after an absence of fifteen years, bringing the news that his father, who's also been in China, has died. Arthur is convinced that his father died with something on his conscience, but Mrs Clennam adamantly dismisses any suspicion of wrongdoing.