One grows tired of jelly babies.
For better or worse, they finally made one for the fans. Very little of David Agnew’s Season Fifteen finale “The Invasion of Time” (Story Production Code 4Z) makes immediate sense without having previously seen—and remembered—”The Deadly Assassin,” which aired over a year earlier. A working knowledge of the Sontarans wouldn’t hurt, either. While prior Doctor Who stories built upon bits of previously established lore, particularly in reference to the Daleks, Cybermen, and the Master, there have, to date, been no stories that so actively require knowledge of an earlier adventure for basic plot comprehension, until now.
Here, Agnew (in actuality a pseudonym for producer Graham Williams and story editor Anthony Read, working with ideas from an abandoned script by David Weir) start the Doctor off in the middle of his own story, facing a tribunal of unseen alien overlords on their spaceship. He then promptly scoots off to Gallifrey and demands to be invested as President of the Council of Time Lords, a far-fetched claim that nonetheless holds validity because of the events in “The Deadly Assassin.” In that story, he runs for President to gain immunity from prosecution in order to investigate the murder of the prior President, a crime for which the Master framed him. None of this backstory is explained, despite there being a full six episodes for exposition. He simply shows up and all the other Time Lords agree, somewhat sheepishly, that yes, he should be invested as President, and pronto.
The Fourth Doctor’s manner throughout the start of this story veers to the peremptory and the haughty. It’s so out of keeping with what we know of the Doctor’s behavior that no extended fandom is required to realize he’s up to something. Nevertheless, for two full episodes, Tom Baker keeps up the facade; he portrays a side of the Doctor never seen before, which as an actor playing a longstanding character must have been rather refreshing. Certainly this story gives the Doctor enough moments in the limelight to please even an inveterate ham such as Baker. But when the Doctor yells at Chancellor Borusa (John Arnatt), his old teacher and a returning (albeit regenerated) character from “The Deadly Assassin,” one recoils at the venom and sheer anger of the expression. Trick or not, it’s the most shocking scene on Doctor Who in years. Well, at least right up until a carnivorous plant in the TARDIS solarium eats a Sontaran…