A London physician leads a double life when he discovers a drug that alters his appearance and disposition.

Know Anyone Like This in Your Life? Politicians? Strange Case of Dr Jekyll and Mr Hyde is the original title of a novella written by the Scottish author Robert Louis Stevenson that was first published in 1886. The work is commonly known today as The Strange Case of Dr. Jekyll and Mr. Hyde, Dr. Jekyll and Mr. Hyde, or simply Jekyll & Hyde. It is about a London lawyer named Gabriel John Utterson who investigates strange occurrences between his old friend, Dr. Henry Jekyll, and the evil Edward Hyde. The work is commonly associated with the rare mental condition often called ""split personality"", referred to in psychiatry as dissociative identity disorder, where within the same body there exists more than one distinct personality. In this case, there are two personalities within Dr. Jekyll, one apparently good and the other evil. About the Author: Robert Louis Balfour Stevenson (13 November 1850 - 3 December 1894) was a Scottish novelist, poet, essayist, and travel writer.

«El tema es infinitamente interesante, y pródigo en todo género de provocaciones, y el señor Stevenson ha de congratularse por haber dado en el blanco.» Henry James «Y es que ciertamente parece que una personificación de Hyde aceptablemente realista anda suelta por Whitechapel», decía la Pall Mall Gazette el 8 de septiembre de 1888 en referencia al segundo asesinato de Jack el Destripador. La novela de Stevenson El extraño caso del doctor Jekyll y el señor Hyde se había publicado dos años antes, en 1886, y se prestaba ya a esta clase de comparaciones. Había entrado de lleno en el imaginario popular y aún hoy, en el siglo XXI, no somos inmunes a su efecto. El caso «esclavizaba» ya la «imaginación» del abogado Utterson, a quien le fue dada la horrible experiencia de ser testigo de la historia; podemos decir que también esclaviza la de sus lectores. Construido como una investigación detectivesca, con una forma narrativa diáfana y perfecta, este «relato alegórico que finge ser policial», según diría Borges, es sin duda una de las piezas maestras de su autor. Esta edición presenta el texto en una nueva traducción de Catalina Martínez Muñoz, con las ilustraciones de Mervyn Peake para la edición de The Folio Society de 1948. Incluye asimismo un memorable artículo de Stevenson sobre la inspiración de la obra y un revelador apéndice de Robert Mighall que la sitúa en el contexto científico, psiquiátrico y criminológico de la época.

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Stevenson's famous exploration of humanity's basest capacity for evil Dr. Jekyll and Mr. Hyde have become synonymous with the idea of a split personality. More than a morality tale, this dark psychological fantasy is also a product of its time, drawing on contemporary theories of class, evolution, criminality, and secret lives. Also in this volume are "The Body Snatcher," which charts the murky underside of Victorian medical practice, and "Olalla," a tale of vampirism and "the beast within," with a beautiful woman at its center. For more than seventy years, Penguin has been the leading publisher of classic literature in the English-speaking world. With more than 1,700 titles, Penguin Classics represents a global bookshelf of the best works throughout history and across genres and disciplines. Readers trust the series to provide authoritative texts enhanced by introductions and notes by distinguished scholars and contemporary authors, as well as up-to-date translations by award-winning translators.

The story of a virtuous Dr. Jekyll who mistakenly creates an alter ego of unadulterated evil serves as an examination of the duality of human nature and the battle between good and evil.