The arrival of the enigmatic Humphry Clinker disrupts the established routines of Squire Bramble’s traveling household, triggering a series of comedic misadventures across 18th-century Britain. The narrative follows the members of the Bramble family as they traverse the country, each character documenting their experiences through personal letters. These conflicting perspectives reveal the internal tensions and social absurdities of the group, while the titular character remains a mysterious presence whose eventual integration into the family serves as the catalyst for the story's resolution. The text operates within a rigid epistolary framework, forcing the reader to synthesize the truth from the biased accounts of the various correspondents.

Discussion often centers on the effectiveness of the epistolary format in highlighting the subjective nature of truth and character perception. Readers frequently highlight the sharp, satirical wit that Smollett employs to critique the social pretensions of the era's elite. Critics often note that the novel serves as a culmination of the author's stylistic evolution, blending his medical expertise with a keen eye for human folly. The balance between the grumpy, cynical observations of Squire Bramble and the more optimistic, albeit naive, perspective of Clinker provides a dynamic contrast that keeps the pacing engaging throughout the travelogue. Many scholars view this work as a significant contribution to the development of the English novel, particularly regarding the use of voice to drive character development.