The Strange Case of Dr. Jekyll and Mr. Hyde

Strange Case of Dr Jekyll and Mr. Hyde is an 1886 Gothic novella by Scottish author Robert Louis Stevenson. It follows Gabriel John Utterson, a London-based legal practitioner who investigates a series of strange occurrences between his old friend Dr. Henry Jekyll and a murderous criminal named Edward Hyde.
Strange Case of Dr Jekyll and Mr. Hyde is one of the most famous pieces of English literature and is considered to be a defining book of the gothic horror genre. The novella has also had a sizable impact on popular culture, with the phrase "Jekyll and Hyde" being used in vernacular to refer to people with an outwardly good but sometimes shockingly evil nature.