Mr Dorrit leaves Amy behind in Venice as he returns to London with newlyweds Fanny and Sparkler, but the high life is not all he had hoped it would be. Meanwhile, Arthur invests Doyce and Clennam's capital in Merdle's Bank, and Flora investigates the disappearance of Rigaud.

Costume drama. Mr Merdle's death and the collapse of Merdle's Bank send shockwaves through London as thousands face financial ruin. Arthur returns to the Marshalsea a prisoner.