The narrative centers on the pervasive influence of debt and social stagnation within the rigid hierarchies of Victorian England. Amy Dorrit, a young woman born and raised within the confines of the Marshalsea debtors' prison, navigates a world defined by financial ruin and the pursuit of status. Her objective is to maintain her family's dignity while supporting her father, the 'Father of the Marshalsea,' against the backdrop of a bureaucratic system that stifles individual agency. The narrative framework employs a third-person omniscient perspective to critique the institutional failures of the era, contrasting the lives of the impoverished with the detached indifference of the wealthy elite.

Discussion often centers on the novel's biting critique of government bureaucracy and the crushing weight of institutional debt. Readers frequently highlight the depth of character development, particularly in the evolution of Amy Dorrit and Arthur Clennam. Critics often note the density of the prose and the slow, deliberate pacing that allows for a comprehensive examination of Victorian society. The atmosphere is frequently described as claustrophobic yet rich with social observation, making it a significant study of the era's economic anxieties. Many readers find the intricate plotting and the sheer scale of the cast to be both a challenge and a rewarding experience.