*SPOILERS* Usually, the habit of not immediately addressing the previous episode’s cliff hanger at the start of the episode bugs me but this time out, with Capaldi’s Doctor back in “Listen”-style lecture-the-audience mode is just so good it didn’t bother me. I’m really starting to like the 12th Doctor’s fondness for the electric guitar (it’s becoming his scarf, his stick of celery or his question…

*SPOILERS* Well, that was a deliciously retro treat, wasn’t it? Since “Doctor Who” returned in 2005, I don’t think there’s been an episode which evoked the original series in quite so pure a form as “Under The Lake”. The classic atmosphere was so strong that when the first caption set the adventure in Caithness and there was a mention of a mysterious spaceship found underwater I had a brief hope…