Like much of Collins’s work, The Dead Secret explores the consequences of a single, hidden act. The Cornish mansion Porthgenna harbors the secret of such an act, one that has ruined the life of the servant girl Sarah Leeson. This same secret lies hidden for fifteen years until the heiress to Porthgenna, Rosamund Treverton, returns and exposes it. Her detective work may reveal the truth, but her revelation of a long-forgotten crime could mean disaster for her and the entire estate. Wilkie Collins’s brilliant characters, suspenseful plots, and piercing look into Victorian-era society are on full display in The Dead Secret.