The Strange Case of Dr. Jekyll and Mr. Hyde is a Gothic novella by Scottish author Robert Louis Stevenson, released in 1886. The work is also known as , Dr. Jekyll and Mr. Hyde, or simply Jekyll & Hyde The book follows a London lawyer named Gabriel John Utterson who investigates strange occurrences between his old friend, Dr Henry Jekyll, and the evil Edward Hyde.This classic novella introduced the phrase 'Jekyll and Hyde' to refer to people with an unpredictably dual nature: usually very good, but sometimes shockingly evil.