Join the world's greatest fictional detective and use your own powers of deduction to solve these puzzling mysteries. This remarkable collection of crimes from John Watson’s newly-discovered case notes features all of the twists and turns that have come to be expected from a Holmes’ case – but now it is up to you to solve them.There are 10 cases to be cracked, each of which requires the reader to answer a question at three points – the beginning, the middle and the end. The Sherlock Holmes Case Book provides hours of sleuthing enjoyment.