The bitter, lifelong rivalry between two brothers, James and Henry Durie, tears their noble Scottish family apart in the wake of the Jacobite Rising. Driven by greed, pride, and a sense of betrayal, the brothers navigate a volatile landscape of shifting loyalties and moral decay. James, the charismatic and manipulative elder brother, returns from exile to haunt the estate, while Henry, the dutiful but resentful younger brother, struggles to maintain the family legacy under the weight of James's psychological and financial predation. The narrative is presented through the perspective of Ephraim Mackellar, the family steward, whose observations provide a grounded, albeit biased, account of the brothers' descent into mutual destruction.

Readers and critics frequently highlight the novel's dark, brooding atmosphere and the complex psychological tension between the two brothers. Discussion often centers on the effectiveness of the steward's narration, which adds a layer of distance and subjectivity to the unfolding tragedy. Many appreciate the nuanced characterization that avoids simple binaries of hero and villain, instead presenting two men consumed by their own flaws. The pacing is often noted for its deliberate, methodical build toward an inevitable and grim conclusion. Scholars frequently point to this work as a significant example of Stevenson's ability to examine the darker impulses of human nature within a historical framework.