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Ideal for elementary learners of English looking to improve and practise their English. The book is filled with useful vocabulary that is carefully graded and easy to understand, it also comes with audio, so that you can listen to the story at the same time as reading.A man from the British royal family leaves an expensive gold and emerald crown at Holder and Stevenson's - one of the best banks in London. When someone tries to take the crown from Mr Holder's desk, he asks Sherlock Holmes for help. Who wants the crown and why? Only Sherlock can find the answers.