Amy “Little” Dorrit is summoned from the debtor’s prison, where she is caring for her father, to work for Mrs. Clennam.

Amy “Little” Dorrit (Claire Foy) is mysteriously summoned from the Marshalsea debtor’s prison, where she is caring for her father (Tom Courtenay), to work for the shut-in Mrs. Clennam (Judy Paritt). Arthur Clennam (Matthew Macfadyen) suspects a long-buried family secret behind his mother’s unaccustomed act of charity.