An engraving of a scene from chapter IX of the novel 'Dr. Jekyll and Mr. Hyde,' by Robert Louis Stevenson (1886) showing Dr. Jekyll transforming into the monster Mr. Hyde in Dr. Lanyon's office. (Photo by Kean Collection/Getty Images)
An engraving of a scene from chapter IX of the novel 'Dr. Jekyll and Mr. Hyde,' by Robert Louis Stevenson (1886) showing Dr. Jekyll transforming into the monster Mr. Hyde in Dr. Lanyon's office. (Photo by Kean Collection/Getty Images)