From the publisher's website:

Have you ever had the desire to walk the streets of Victorian London with Sherlock Holmes in search of Professor Moriarty? To walk up Baker Street as the fog is rolling in and hear Holmes cry out, “Come, Watson, come! The game is afoot!”? Now you can! You can capture the mystery and excitement of Holmes’ London in this challenging and informative game. You, the player, will match your deductive abilities against your opponents. In Sherlock Holmes Consulting Detective, you are presented with a mystery to solve, and it is then up to you to trace the threads of evidence through the byways and mansions of nineteenth century London. You will interview suspects, search the newspapers for clues, and put together the facts to reach a solution.