Robert Louis Stevenson was a Scottish novelist, poet, and essayist from Edinburgh. He suffered from tuberculosis and died at age 44, but produced a vast body of work that included travel narratives, historical adventure novels, poetry, and essays. He is best known for classic children's adventure stories like Treasure Island and The Black Arrow, as well as the psychological horror novel Strange Case of Dr. Jekyll and Mr. Hyde about split personality. Several of his novels have been adapted into popular films and his essays were influential on the structure of the modern adventure novel.