Sherlock Holmes is a master at solving the most impenetrable mysteries, but he has his work cut out for him on his latest case. Prince Alexis is accused of a theft that he insists he didn’t commit. The evidence is stacked against him, but Holmes’ trusted friend, Dr. Watson, vouches for the prince. As the famed detective investigates, he’s brought face to face with his most devious adversary yet — Professor Moriarty.