It’s a field trip with a difference in this week’s Sherlock, as Mark Gatiss takes on perhaps the best known Holmes story of them all: The Hound of the Baskervilles. Our heroes decamp to the bleakness of Dartmoor to deal with an apparently supernatural hound. Is it somehow linked to a nearby top-secret research facility named Baskerville? And can Holmes continue to function at his deductive best if he can’t fully rely on the evidence of his own senses?

Spoilers below …

It has been nearly 17 long months since the first season of the Steven Moffat/Mark Gatiss-penned reboot of Sherlock left us with a literally explosive cliffhanger as Holmes faced off against his evil alter ego Jim Moriarty for the first time. As this new three-part second season begins we return to the scene of this climactic showdown to see its resolution, before launching into a story of sex, scandal and a mind-bending mystery which pits Sherlock and John Watson against a female foe who proves to be their equal at every turn: ‘The Woman’, dominatrix Irene Adler.

Spoilers from here on in, naturally …

*** WARNING: SPOILERS (naturally) ***

Five months after watching the Doctor killed by a space-suited assailant at Lake Silencio on the Plain of Sighs, we finally learned how the Time Lord cheated his destiny. The Wedding of River Song answered all (well, most) of our questions, set up new ones for next year and also managed to reset the series to move the Doctor away from being a feared God-like Time Lord Victorious, perhaps moving back to being the quiet adventurer he was in the Hartnell era.