The novel follows a wealthy married couple whose domestic ease is disrupted when the husband seeks to adopt an unhappy adolescent orphan. Tension arises between the wife's accustomed social comforts and the newcomer's awkward presence, while their young daughter watches. Social appearances, class expectations, and personal vanity complicate family life as past secrets and ambiguous histories surface. The narrative unfolds across interlinked episodes that alternate intimate drawing-room scenes with revelations that provoke doubt, suspicion, and scandal, threading domestic melodrama into a broader mystery about identity, reputation, and moral responsibility.