THE SIGN OF FOUR + EBOOK - MR INTERMEDIATE - ARTHUR CONAN DO

THE SIGN OF FOUR EBOOK - MR INTERMEDIATE The Sign of Four is an adapted Intermediate level reader written by Sir Arthur Conan Doyle. Sherlock Holmes is on another classic detective adventure which this time sees him trying to help Mary Morstan find the truth about her father and the man who has been sending her pearls. DOYLE ARTHUR CONAN 22 de mayo de 1859, Edimburgo - 7 de julio de 1930, Crowborough. Doyle fue un médico y prolífico escritor escocés, que sobre todo pasó a la historia gracias