Sherlock Holmes has always been the smartest man in the room, until now. There is a new criminal mastermind at large, Professor James Moriarty, and not only is he Holmes's intellectual equal, but his capacity for evil, coupled with a complete lack of conscience, may give him an advantage over the renowned detective. Holmes's investigation into Moriarty's plot becomes more dangerous as it leads him and Watson out of London to France, Germany, and finally...

Terror by night: Holmes is hired to protect a diamond that is being transported by train. Woman in green: Holmes is called in to solve a baffling series of murders. Sherlock Holmes and the secret weapon: Prof. Moriarty is working with the Nazis to create a superweapon. Dressed to kill: The owners of music boxes are being murdered and Holmes is called in to find the killer. Sherlock Holmes & the deadly necklace: Holmes & Watson investigate the theft...