The book "4.50 from Paddington" is an adapted version of one of Agatha Christie's most famous crime novels, specifically designed for learners of the English language. This edition is part of the Collins ELT Readers series and is aimed at learners at the B2 level of the Common European Framework of Reference. With a word count of 22,000 to 30,000 words, the book offers an exciting and accessible read that allows readers to improve their language skills while immersing themselves in the captivating world of Miss Marple. The story revolves around a murder that takes place on a train and the subsequent investigation led by Miss Marple and her friend Lucy Eyelesbarrow. The careful adaptation of the text ensures that the language is suitable for intermediate learners while providing an authentic literary experience.