‘Let’s give smartarse a wide berth’

With fortunes and reputations at stake, courses for witnesses are in demand, says Grania Langdon-Down

Dr Watson urges Sherlock Holmes not to “try to be clever” as he prepares to give evidence in the trial of the arch criminal Jim Moriarty in the denouement of the recent Sherlock series on BBC One. But, unable to resist several cutting put-downs, the great detective earns himself a trip to the cells for contempt of court.