Sherlock: The Great Game

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.

Sherlock: The Blind Banker

Watson: “Me, Sherlock. In court. On Tuesday. They're giving me an ASBO.”

Tonight's episode was a loose adaptation of Sir Arthur Conan Doyle's 'The Dancing Men'—and when I say 'loose' I mean pants falling down, baring your arse loose. If Steven Moffat hadn't mentioned it on Twitter, I probably wouldn't have noticed. The only similarity I picked up on was that both stories have a secret code as their central theme. In 'The Dancing Men' it was a code based upon a system of hand-drawn stick men, in 'The Blind Banker' it was a system of graffiti style Hangzhou numerals. Apart from that, and a couple of possible references to 'The Sign of Four' and 'The Valley of Fear,' I caught nothing.