Dismissed from his post at a prestigious London hospital, Dr. Henry Talbot has little choice but to accept a mysterious offer of employment as a private physician from an inscrutable lord in rural Wales, Lord Julian. Arriving at Plas Helyg, the isolated estate, Henry can’t speak the language and finds himself treated with hostile suspicion by superstitious villagers, whose beliefs in myths and magic he’s inclined to dismiss. But when he discovers that his predecessor died under peculiar, inexplicable circumstances, his determination to uncover the truth leads him down a path fraught with danger --- made all the more perilous by his headstrong, reluctant ally Linette, Lord Julian’s cousin.

London, 1799. Dora Blake, an aspiring jewelry artist, lives with her odious uncle atop her late parents’ once-famed shop of antiquities. After a mysterious Greek vase is delivered, her uncle begins to act suspiciously, keeping the vase locked in the store’s basement, away from prying eyes --- including Dora’s. Intrigued by her uncle’s peculiar behavior, Dora turns to young, ambitious antiquarian scholar Edward Lawrence, who eagerly agrees to help. Edward believes the ancient vase is the key that will unlock his academic future; Dora sees it as a chance to establish her own name. But what Edward discovers about the vase has Dora questioning everything she has believed about her life, her family and the world as she knows it.