Newgate Prison houses the notorious Gruesome Four: Professor Moriarty, Jack the Ripper, Sweeney Todd, and Edward Hyde. Rumors have spread of their plan to work together in constructing a bomb to plant in the city. Sherlock Holmes had been hired to investigate the rumors, but before he could disclose his findings, the Gruesome Four broke out of Newgate and kidnapped the famed detective. One of them has planted the bomb somewhere in London. Scotland Yard has summoned you to 221b Baker Street to put together Sherlock’s findings, and figure out the location of the bomb. It’s set to detonate at the strike of Big Ben, 50 minutes from now… Will you be able to save London in time?