Solve Sherlock-Holmes-style mysteries using clue letters mailed to your door. Each mystery includes 3-4 clue letters and one solution letter from Sherlock Holmes. Mysteries vary, but include murders, robberies, forgeries, espionage, and more. Clue types include secret codes and ciphers, maps, diagrams, and witness statements. There are several ways to play. Play by yourself, with friends, or compete in the global Featured Detective Competition.

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