"The Strange Case of Dr Jekyll and Mr Hyde" is a novella by Robert Louis Stevenson that explores the duality of human nature. The story follows Dr. Jekyll, a respected scientist, who creates a potion that transforms him into Mr. Hyde, a violent and immoral alter ego. This transformation allows Jekyll to indulge in his darker desires without facing the consequences. As Hyde, Jekyll commits various crimes, including the murder of Sir Danvers Carew. The struggle between Jekyll and Hyde represents the conflict between good and evil within a person. Ultimately, Jekyll's attempts to separate these two sides lead to tragic consequences, highlighting the complexities of identity and morality.