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. What does the name 'Agatha Christie' mean? To many people, it means a book about a murder mystery — a 'whodunnit'. 'I'm reading an Agatha Christie', people say. 'I'm not sure who the murderer is — I think it's...' But they are usually wrong, because it is not easy to guess the murderer's name before the end of the book. But who was Agatha Christie? What was she like? Was her life quiet and unexciting, or was it full of interest and adventure? Was there a mystery in her life, too?