Watson: (about Agent Drummond) You know her?
Holmes: We worked together when an American serial killer came to London. She's a buffoon. All profilers are. They're snake oil salesmen who cast maladjusted closet cases as criminal geniuses in the media. The profilers, in turn, can be super-geniuses when the killers are caught.
Watson: Isn't profiling part of what you do?
Holmes: I deduce. Enormous difference.