While society gathers for a grand Hampshire garden-party, Geoffrey Hossack wanders in misanthropical discontent, consumed by his hopeless love for Janet Davoren. Seeking solitude in a rustic village nearby, he unexpectedly encounters Janet's little daughter Flossie and subsequently Janet herself, who remains steadfastly bound by her marriage vows despite her husband's reported demise in America. Meanwhile, in London, Lucius Davoren maintains a tense watch over Cedar House and its eccentric owner, Homer Sivewright. The narrative deepens as dark secrets of parentage and hidden communication come to light, revealing an intricate web of past transgression and deceit.
Lucius embarks on a determined quest across the Channel to Rouen to uncover the truth about a long-buried past and clear his name from lingering doubts. Through careful investigation of old letters and interviews with reluctant witnesses, the plot unravels a tale of youthful folly, mercenary calculation, and silent suffering. The arrival of new evidence reshapes the destiny of the characters, culminating in a dramatic reckoning at Cedar House where old hatreds and hidden crimes finally confront their nemesis. As the story draws to a close, past grievances are laid bare, and the younger generation looks toward a more peaceful future, freed at last from the shadows of deceit.