Henry Esmond, an orphaned youth raised amidst the political volatility of the Stuart era, finds his loyalties and affections tested by his aristocratic guardians. As he matures, Esmond navigates the complex social hierarchies of the Castlewood family while grappling with his conflicting romantic attachments to Lady Castlewood and her daughter, Beatrix. His personal development is inextricably linked to the broader Jacobite cause, forcing him to choose between his personal desires and his political convictions. The narrative is presented as a memoir, providing a retrospective account of his life during a period of significant national transition.

Discussion often centers on the technical precision with which Thackeray mimics the language and tone of the early 18th century. Readers frequently highlight the psychological complexity of the protagonist as he navigates his dual attachments to the mother and daughter. Critics often note the balance between the intimate domestic drama and the larger political backdrop of the Stuart restoration attempts. The work is widely regarded for its atmospheric consistency and its departure from the more satirical tone found in the author's other major novels. Many readers appreciate the depth of the character development, though some find the pacing deliberate and reflective of the period it depicts.