I doubt K9 will top this. It is far more developed and more complex than the rest of the series, with a compelling guest character in the sympathetic out of time girl Taphony. The performance is sparkling and sits among the regular cast beautifully. Everyone has an understandable motivation and none of our regular characters are treated as stupid, all being a couple of steps ahead of their usual selves. The introduction of time travel / time bending also feels satisfying. Taphony’s character does seem to be drawn to a similar mold of Eleven from Stranger Things, well ahead of that show’s conception. Any Doctor Who spin off, or even the main show itself, would be proud of an episode of this quality. From the incidental music to the camerawork, it all just shines a little more here.