After last week's mostly good, but also horribly dreadful episode, it was nice to see Doctor Who right itself a bit this week, even if that meant offering up a story which, whilst fun, was not terribly memorable. It did, however, see a brief return of a plot structure that the show has played with in the past: Doctor Who without The Doctor. In fact, by my reckoning, this is the first use of this particular trope since "Turn Left" way back in 2008, and even though the episode moved away from it by the midway point, it was still interesting to see how Moffat's Doctor Who functioned without the presence of Moffat's Doctor. Turns out that it works surprisingly well, which is testament to what a well-oiled, if workmanlike machine it has become.