Sherlock Holmes and his friend Dr. Watson are investigating a kidnapping and murder that took place in an elite private school in the north of England.The story is adapted according to the method of Ilya Frank: provided with a literal translation into Russian and the necessary lexical and grammatical commentary (without simplifying the original text). The uniqueness of the method lies in the fact that the memorization of words and expressions occurs due to their repetition, without memorization and the need to use a dictionary.The manual contributes to the effective learning of the language, can serve as an addition to the curriculum. Designed for a wide range of English learners and people interested in English culture.