Companion: Jamie McCrimmon, Zoe Heriot
Written by: Peter Ling
Directed by: David Maloney
Background & Significance: Patrick Troughton's final season was one giant limp to the finish line for 1960s Doctor Who. As it was originally conceived, Doctor Who was a smaller, less technically-demanding show and could thusly fit more into a weekly production schedule. Recycle your sets for a few weeks, keep the stories coming, no one would be the wiser. It's why the show was able to crank out forty episodes per year for almost six years: less location shooting, less ambition.
Fortunately, given its growing popularity, Doctor Who got more and more ambitious. There was location shooting and aliens and bigger sets and a bigger, more action-based show than the one that was originally conceived.
Needless to say, this was one of the contributing factors to the massive overhaul the show saw starting in "Spearhead From Space". The show's episode count was dropped from 40+ to 25. There was a transition to colour. And all of a sudden Doctor Who became much more producible and less demanding on its actors. Indeed, one of the reasons Patrick Troughton left the role (besides his fear of typecasting) was to take a break from the grueling pace of putting out so many frakking episodes in a year (and to his credit, he didn't take nearly as many days off as other actors did; to be fair, though, Hartnell was remarkably sick when he took the role).
With the need to fill another episode in the order (and wanting to not get slammed like they did with "Mission to the Unknown" a few seasons back when they cut an episode out of "Planet of the Giants") it was up to script editor Derrick Sherwin to come up with an extra episode to tack onto the top of "The Mind Robber" so they would fill their seasonly quota. To compensate for the overrun, the episodes were all condensed from the usual 25 minutes to an experimental 20 minutes, so we're still getting a hundred minutes of story, only spread out over five episodes instead of the usual four (with the first being a prologue to establish the setting at hand, or at least, to weird you the fuck out for twenty minutes before they slam you with something even more mindblowing).
Written by Peter Ling and introducing the direction of the fantastic David Maloney, it makes "The Mind Robber" something remarkably special and iconic for so many different reasons.
So let's get to it!