Help your students read their way to better English with this new edition of the world's best graded readers — now with a new range of World Stories, fully revised Factfiles, more audio, and new tests. The new edition includes the original Bookworms stories, plus the Starters, Playscripts and Factfiles, making it easy for you to see the full choice of books at each Stage. The highly acclaimed seven-stage system of grading, from Starter to Stage 6, remains the same, helping you to find the right level for all your students. Dr Huxtable has a school for boys in the north of England. When the Duke of Holdernesse decides to send his young son there, that is good news for the school. The Duke is a very important person, and Dr Huxtable is happy to have his son in the school. But two weeks later Dr Huxtable is the unhappiest man in England. Why? And why does he take the train down to London and go to Baker Street? Why does he need the help of the famous detective Sherlock Holmes? Because someone has kidnapped the Duke's son...