At last, Sherlock Holmes has met his nemesis. And it's not Professor Moriarty. It's a sexy dominatrix whose intelligence matches her beauty — a steely foil for the famous detective.
Actress Lara Pulver dons that mantle when "Sherlock" returns to "Masterpiece Mystery!" on PBS in "A Scandal in Belgravia," at 9 p.m. Sunday on UNC-TV.