"Dr. Jekyll and Mr. Hyde" is a novella written by Robert Louis Stevenson that explores the duality of human nature. The story follows Dr. Henry Jekyll, a respected scientist, who creates a potion that transforms him into Mr. Edward Hyde, a violent and immoral alter ego. This transformation allows Jekyll to indulge in his darker impulses without facing societal consequences. As Hyde, Jekyll commits various crimes, leading to a struggle between his two identities. The narrative raises questions about the nature of good and evil, ultimately illustrating the conflict within individuals when they confront their darker sides.