Little Dorrit is a serial novel by Charles Dickens published originally between 1855 and 1857. It is a work of satire on the shortcomings of the government and society of the period.
Much of Dickens' ire is focused upon the institutions of debtors' prisonsin which people who owed money were imprisoned, unable to work, until they have repaid their debts. The representative prison in this case is the Marshalsea where the author's own father had been imprisoned.