Trilby by George du Maurier is a novel of bohemian Paris and psychological manipulation. The story follows the titular artist’s model, Trilby O’Ferrall, and her entanglement with Svengali, a sinister musician who hypnotizes her into becoming a great singer. The novel explores themes of art, control, and innocence, while also shaping the archetype of the manipulative mentor. Trilby became a cultural phenomenon, introducing the term 'Svengali' into common usage.