Moriarty: “Twelve hours to solve my puzzle, Sherlock. Or I'm going to be so naughty.”If last week's episode had a weakness, it was the puzzling absence of some of the show's major characters. Lestrade was inexplicably AWOL, Moriarty was reduced to a faceless cameo, and even Mycroft was conspicuous by his absence. So it was only fitting that tonight's episode attempt to redress the balance by bringing them all together in one story. Well, in reality it was five stories—but tonight saw Holmes' unique talents stretched to the limit. And, finally, we got to see Moriarty step out of the shadows and face his arch-nemesis.
