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Sir Arthur Ignatius Conan Doyle (1859-1930) was a Scottish writer, known primarily for his works about Sherlock Holmes. Four of his novels are dedicated to the adventures of Sherlock Holmes: "A Study in Scarlet", "The Sign of Four", "The Hound of the Baskervilles", "The Valley of Terror" and five collections of short stories, the most famous of which are "The Adventures of Sherlock Holmes", "Notes on Sherlock Holmes" and "The Return of Sherlock Holmes". The prototype of the protagonist, who soon became a legendary consulting detective, was Joseph Bell, a professor at the University of Edinburgh, who was famous for his ability to guess the character and past of a person by the smallest details. It was thanks to the extraordinary popularity of Sherlock Holmes and his faithful companion and biographer Dr Watson that the writer gained worldwide fame, and his works became a classic example of the detective genre. The book contains adapted texts of stories from The Adventures of Sherlock Holmes, a glossary, exercises to check reading comprehension and consolidate speaking skills. The textbook is recommended for students of secondary schools, gymnasiums, lyceums, as well as for anyone learning or improving their English language skills.