One of the most popular and long-lasting “penny dreadful” books of the 1880s is, without question, Robert Louis Stevenson’s “THE STRANGE CASE OF DR. JEKYLL AND MR. HYDE.” This gothic tale of horror and mystery follows a London-based lawyer who investigates a series of events linking his good friend Dr Henry Jekyll and a murderous criminal named Edward Hyde. The story so resonated in the imagination of readers since its first publication in 1886 that it has become a reference point for any exploration of hidden duality and dark secrets. The names “Jekyll and Hyde” have themselves become synonymous with “good” and “evil.”