Dartmoor. A wild, wet place in the south-west of England. A place where it is easy to get lost, and to fall into the soft green earth which can pull the strongest man down to his death. A man is running for his life. Behind him comes an enormous dog - a dog from his worst dreams, a dog from hell. Between him and a terrible death stands only one person - the greatest detective of all time, Sherlock Holmes.

The Oxford Bookworms Library offers high-quality storytelling and a great reading experience, with a world wide range of classic and modern fiction, non-fiction and plays. Bookworms include original and adapted texts in seven carefully graded language stages (Starter to Stage 6), which take learners from beginner to advanced level.