Given his own appetite for shame, Dr. Jekyll decides that man has a dual nature – good and evil, and becomes obsessed with separating the two.
During the day, Dr. Jekyll leads a respectable, sober life. At night, however, he gives way to his secret desires and roams the street as Mr. Hyde. He leads the best of both lives. He’s living the dream.
Dr. Jekyll feels that the balance of his natures is tilting in favor of evil. He then decides to remain permanently as Dr. Jekyll, but the secret desires remain.
Mr. Hyde becomes a wanted man throughout the country. Dr. Jekyll resolves to stay respectable, but his transformations into Mr. Hyde increase, even without the aid of his potions.
Dr. Jekyll finally loses all control over his transformations into Mr. Hyde, and barricades himself in his laboratory. He runs out of his transformative potion, and although he tries to make new batches, cannot duplicate his original potion. He ends his statement by saying that Dr. Jekyll is dead, and that he cannot know what Mr. Hyde will do. This is a textbook ending to the classic tragic plot.