My favourite episode of this new era so far. Yes, there are issues with it, but like all the best Doctor Who episodes (in my opinion) it's much more about the vibes and feel of an episode, rather than the plot or writing, and this episode did that spectacularly.

The on-location filming really enhanced this for me. All three previous episodes were filmed mostly on sets, so getting to see the breathtaking beauty of the Welsh countryside and familiar feel of a European street was a breath of fresh air.

I liked that finally someone in-universe points out the repeat appearance of Suzan Twist. The UNIT cameo was fun, as was seeing Ruby's family again.

I think my favourite bit of cinematography in this episode is something I doubt many people would have noticed: when Kate hears what the woman is saying and Ruby realises she's going to run away, they set the lights in such a way that there were no reflections in Ruby's eyes. Usually, actors have to play the light fading from their eyes (which Millie Gibson did do here, spectacularly so), but this was an extra visual I found very evocative.

I'm not sure I like the woman being Ruby. I think the story works better when she's a fairy. Still, not enough to ruin it for me.