The Strange Case of Dr. Jekyll and Mr. Hyde is a dark and gripping novella by Robert Louis Stevenson that explores the duality of human nature. Set in Victorian London, it tells the story of the respectable Dr. Jekyll, who creates a potion to separate the good and evil within himself. The result is the terrifying Mr. Hyde, a man who embodies his darkest impulses. As Hyde begins to take control, Jekyll finds himself in a desperate struggle for his soul. This haunting tale is both a psychological thriller and a moral allegory, raising timeless questions about identity, repression, and the battle between good and evil. Stevenson's masterful storytelling and atmospheric writing make it one of the most enduring classics of Gothic literature.