!!The book provides examples of:
* AdaptationOverdosed: There have been hundreds of film and play adaptations of the book, as well as references in popular media.
* BasedOnADream: Allegedly, the idea for the story came from a fever dream. Many rumours tie the origins of the story to Stevenson's cocaine addiction.
* CreatorBreakdown: The popular story is that Stevenson wrote the novel after a particularly vivid nightmare. Even if this isn't true, then the novel's themes of duality and of a man suffering drastic personality shifts and driven to ruin by what is essentially an escalating drug addiction probably rang true with the author, who was not unfamiliar with such situations.
* LifeImitatesArt: Jekyll theorizes that every man may be more than just ''two'' men, each with their own role. Roughly thirty years later, Sigmund Freud publishes the ideas of the [[http://en.wikipedia.org/wiki/Sigmund_Freud#Id.2C_ego.2C_and_super-ego id, ego and superego]].

!!The 1941 movie provides examples of:
* FakeBrit: All the main players.
* PlayingAgainstType: Invoked: Ingrid Bergman was cast as Jekyll's virtuous girlfriend Bea, and Lana Turner was supposed to play Ivy, the slutty barmaid (and implied prostitute). Bergman, bored with playing righteous heroines, requested that the roles be reversed, and they were.