Professor James Moriarty is the arch-enemy of Sherlock Holmes. Whilst he appears to be a respectable Cabman, James Moriarty is in fact a criminal mastermind who is linked to a massive network of crime and deception. He is a mathematics professor turned the world's only consulting criminal. His genius is equal to, if not perhaps greater than, Holmes himself. Moriarty has been proven to be the most dangerous of all the criminals that Holmes has ever encountered.