The Tenth Planet Episode 4

The one where William Hartnell leaves and Patrick Troughton joins...

And so here we are, at the very end of the First Doctor's era, where William Hartnell leaves the programme he helped make a national phenomenon three years earlier. Frustratingly, The Tenth Planet episode 4 is also missing from the archives, and actually begins the longest run of consecutive missing episodes - 12 episodes between October 29th, 1966 and January 14th, 1967. Luckily, we have the audio of the episode, and although it was reconstructed using animation for the 2013 DVD release, I've chosen to stick to what we have from the episode as transmitted - the fan-recorded off-air audio and John Cura's telesnaps - and reviewed the VHS reconstruction from 2000.

William Hartnell makes an early return to the action, having gotten over his bronchitis, which is just as well given that this was scheduled to be his last ever episode (goodness knows what Plan B was if he was still too ill to record!). The Doctor tells Polly that he's not sure what happened to him, but that it "comes from an outside influence. This old body of mine is wearing a bit thin." An early indicator to the audience that not all is what it seems, and that we may not have seen the last of this strange influence upon our hero just yet.

The Tenth Planet Episode 3

The one where General Cutler risks the future of Earth to save his son...

Can I just say, before we start, seeing as he's the first person we see in episode 3, a big "Woof!" to the actor playing the radar technician, Christopher Matthews. That's all.

Right, where are we? Ah yes, there's hundreds of Cyber-ships on their way from Mondas to Earth, so what better time for the Doctor to suddenly, without warning or due cause, faint. In the real world, of course, William Hartnell was not a well man, and although his performances in preceding stories such as The Smugglers and The War Machines were as good as ever, they had been recorded during the summer of 1966, when Hartnell was obviously feeling better. By the time recording for Season 4 resumed for The Tenth Planet in mid-September, Hartnell was noticeably frailer and his performance was suffering. Something had to be done, so the Doctor's role was greatly reduced for this story, and on August 6th, 1966, it was announced to the media that Hartnell would be leaving Doctor Who.

The Tenth Planet Episode 2

The one where the Cybermen storm Snowcap Base...

As with The War Machines, we get some vital information about the situation transmitted to the world via a newscast (this time on International Television News), adopting Russell T Davies' method of filtering extraordinary events through everyday means almost 40 years beforehand. It's a pity we don't get to see 1966 Doctor Who's vision of the earlier serial's London boozer as it might appear in the "futuristic" year 1986! Actually, it'd probably be a wine bar rather than a pub.

The Cybermen inexplicably don their victims' anoraks in order to infiltrate the control room, before revealing themselves in extravagant fashion by whipping off their ill-fitting hoods and displaying their utterly strange visage for all to gasp at (or scream at if you're Polly). These Cybermen, as we learn they're called ("Yes, Cy-ber-men"), really are very strange to look at. They appear to have been designed in a piecemeal fashion, reflecting the spare part surgery which took place to bring these monstrosities about. Sandra Reid's costume design might have been executed rather haphazardly (the Selloptaped headgear is embarrassing), but the aesthetic is terrifying and ageless. Fifty-one years later the new series would bring back and update the design, to fabulous effect.

The Tenth Planet Episode 1

The one where Earth's long-lost twin planet reappears in the Solar System...

The Tenth Planet starts with the same modern dynamism that The War Machines did (and The Smugglers didn't), complete with animated opening captions, shots of bleeping computers, and some stock footage of a rocket launching (it's actually an Australian missile test, but we'll let that slide).

We're introduced to a bunch of earnest looking men at the South Pole base of International Space Command (Snowcap Base) who are in communication with the two astronauts aboard the Zeus 4 rocket, Schultz and Williams. It's great that Williams is played by a black actor (and that his skin colour is not relevant or referred to). It's pretty progressive casting on behalf of director Derek Martinus, because although we soon discover this story is set 20 years in the future (ie, 1986), in the real world, there wasn't an African-American astronaut until 1983's third Challenger mission (interestingly, that was Guion Bluford, which is a twisted irony as the Caucasian astronaut here has the nickname "Bluey"!).