Height: 185 cm (6'1")
Hometown: North Riding, Yorkshire

He is the antagonist to Moriarty and also the figure around which Moriarty's plan revolves. He enjoys puzzles, is a violin player, has a prodigious observational skill, well-versed in hand-to-hand combat and has a machiavellian attitude when it comes to something he wants. He is a detective consultant and can be considered an intellectual match and rival to Moriarty himself.