HarperCollins is pleased to introduce its new series of beloved, essential classics. "All human beings, as we meet them, are a mixture of good and evil." After taking an elixir from his laboratory, the mild-mannered Dr. Jekyll transforms into the cruel and contemptible Mr. Hyde. Although he initially appears harmless, the situation soon descends into chaos, and Jekyll quickly realizes that there is only one way to stop Hyde. Stevenson's classic novella of the Victorian era embodies the conflict between psychology, science, and religious morality, but is fundamentally a triumphant study of the duality of human nature.