do we know for certain how many episodes she's in? Is it this one and the two-part finale?
That's what I heard early on, or perhaps I imagined it in the meantime. So no, not for certain 😄
an officious, shady Time Lord during Peter Davison's era
Lines up perfectly with my theory about the Doctor's coat in this episode! I do think we need more retired Time Lords just casually pottering about in the British countryside.
Wasn't there a beekeeper in "Delta and the bannermen" that had the fandom theorising like mad? Oh, and Professor Chronotis!