When Sherlock Holmes sets out to solve a case, no mystery is too tricky for him. Join the master detective on his quest for clues: The 25 tasks in this fascinating book are presented like little crime stories from the world of London’s Baker Street 221b. To find the clues for their solutions, you must observe with razor-sharp focus, interpret the smallest signs correctly, and conclude with keen awareness. And if you find yourself as puzzled as the loyal friend Dr. Watson, the solution can be found in the appendix.