One clue leads to another clue, and this leads to another, and only the best detective can figure out that the second clue was false because the third clue doesn't exist yet.

Do you think you are the best? Sorry to disappoint you, the best is named Sherlock, Sherlock Holmes and he is unbeatable.
This magnificent poster collects data, characters, places and hundreds of facts for you to increase your knowledge to unsuspected limits and discover who and why and who did it before Scotland Yard.

In two sizes printed in high quality. Now you can get this wonder because it is ... elementary, my dear Watson