The Mystery of the Lost Dauphin: Louis XVII is a historical novel written by Emilia Pardo Bazan in 1906. The story is based on the real-life mystery surrounding the fate of Louis XVII, the son of King Louis XVI and Queen Marie Antoinette of France, who disappeared during the French Revolution. In the novel, the protagonist is a young Spanish girl named Isabel de Meneses who becomes embroiled in the mystery when she meets a man claiming to be Louis...