At the same time, its been a while since the Doctor took on a new companion.
Over time, even Amy and Rory turned out to be his mother and father-in law.
Nothing, in our book.
In fact, that covers just about every female leads departure in the last decade.
Either of those titles could fit into the catalogue of portentous nicknames afforded to Moffat-era companions.
The episodes are speculated to be a two-parter, but theyre also written by different writers.
Full disclosure Im a Teessider like Marsay, so I might be a bit biased there.
(#UpTheBoro!)
Of course, we know that Michelle Gomez is pencilled in for a return as Missy next series.
But an everyman character (like Craig, if not Craig) could bring a different dynamic.