Sherlock Holmes is missing, and the streets of London are awash with crime. Without the famously shrewd detective to save them, who will help the people of London? The Baker Street Irregulars – a gang of street kids hired by Sherlock himself to help solve cases – accept the challenge of defending the Victorian city against the forces of evil, including the criminal mastermind believed to be the notorious Moriarty. Based on the graphic novels by New York Times best-selling author Tony Lee, drawn by critically acclaimed artist Dan Boultwood, this family-friendly adventure will unveil clues as to the true fate of Sherlock Holmes. The game is afoot!