7 episodes
Aired between 9th May 1970 and 20th June 1970
Written by Don Houghton
Produced by Barry Letts
Directed by Douglas Camfield and Barry Letts
Synopsis
The Doctor has travelled with UNIT to a top secret base that houses the Inferno project; a government funded experiment to drill through the Earth's crust to obtain a theoretical new source of energy known as Stahlman's gas. Professor Stahlman who is leading on the project believes that the gas will provide unlimited energy to the world.
UNIT are there to oversee the project and the Doctor has tried to give advice to Stalhman on the undertaking of this project but has been spurned by the ill tempered scientist, so he's decided to keep out of it and siphon off some of the nuclear power used for the drill to power his own experiments on getting the TARDIS up and running again.
The Doctor isn't the only one with concerns about the Inferno project. Sir Keith Gold, Executive Director of the project has called in an expert on oil drilling, Greg Sutton, to advise Stahlman as he feels the Professor is taking far too many risks. Sutton tries to ingratiate himself with the Professor, but he gets short shrift from him, and from Stahlman's Assistant, Petra Williams.
Sir Keith's concerns about the safety of the project aren't altogether unwarrented. Strange green slime has been leaking back out of the drill shaft. Sir Keith brings in an engineer called Slocum to tighten up the shaft. He touches the slime and it steadily mutates him into some kind of green werewolf called a Primord (never mentioned on screen, but that's what the script calls them).
Soon afterwards, Slocum kills one of his coworkers with a wrench which is incredibly hot for hours after the event.
The Brigadier sends out Sgt Benton and his men to investigate and find Slocum whilst the Doctor continues with his experiments (with Liz's help of course). As the experiment gets underway, Slocum goes into the reactor room and attacks a worker called Bromley. Once he's out of the way, Slocum increases the reactor to full power, dangerously overheating the drill and pushing too much power into the TARDIS console.
Liz panics as the Doctor disappears with the console, being trapped into some kind of limbo.
Luckily, Liz manages to shut off his power locally and he returns. Over at the drill head, Greg Sutton is going banana's as Stahlman is trying to keep the drill going instead of shutting it down. He chastises Petra for rushing in to try and cut off the power and is forced to follow her and lend a hand.
Now back in the real world, the Doctor and Liz rush off, joining the Brigadier and Sgt Benton at the reactor room where they find the Primord.
The Doctor tries to distract the monster but a UNIT soldier called Wyatt shoots it, causing it to attack and wound the soldier before it finally dies. The Doctor uses the butt of the Brigadiers pistol to knock the red hot lever and lower the power level to normal once more, averting a meltdown.
The Brigadier takes the Doctor outside and asks him what he thinks to the developing situation. The Doctor is worried about the fact that there's a mutated monster with such power knocking about and he says he's heard the screeches that the monster has made elsewhere. He claims to have heard them during a volcanic eruption at Krakatoa. Benton rushes up to them both and tells them that the scientist Bromley and the Wyatt, the soldier have both disappeared before they could be taken for first aid.
The Brigadier takes his leave of the Doctor, and as the latter is returning to his workshop, he sees one of the fugitives on top of a nearby cooling tower. He gives chase and comes face to face with Pvt. Wyatt who is now himself a mutated green werewolf.
The Primord lunges for the Doctor, but he dodges it and sends the creature falling to the ground below, killing it. The Soldiers run to the creature and the Doctor yells down to them not to touch it.
The Doctor heads off back to the control room where he finds that the emergency on the drill has ceased but there are other concerns. They are presented with a jar full of the hot green slime and Professor Stahlman is told that it has been leaking up from the outflow pipe and could be related to the drilling problems.
He scoffs at the idea and refuses any attempts to slow down the drill. Seeing that the glass container it's in is cracking, Stahlman grabs it with his bare hands and puts it back in the carry case it came in; ordering it frozen.
The Doctor tries to get Stahlman to at least look at the computer readings that are saying this project is in serious danger, but he refuses.
As he walks off, he rubs at his burnt hand that is turning a distinct shade of green. He hides it with a pair of white gloves. when no one's looking, Stahlman goes back into the control centre and steals one of the circuits for the computer and takes it into the Brigadier's empty office. He is about to smash it when the Doctor catches him in the act and uses some Venusian Karate on him, paralysing the Professor. The Brigadier walks in and demands to know why the Doctor is assaulting the Professor.
A blustered Stahlman demands that the Doctor is removed from the facility and refuses him access to any more nuclear power. He then storms off. Once he's gone, the Doctor explains what Stahlman was trying to do. The Brigadier and the Doctor confront Stahlman together and demand that he empty his pockets - neither contains the circuit. The Doctor storms off in a huff back to his workshop, secretly switching on his power supply as he leaves. Once the Brigadier is gone, Stahlman crushes the circuit underfoot.
Over at the workshop, the Doctor asks Liz to go over to the main complex to put some calculations into the computer. She obeys, only to find that the computer is broken (due to the missing circuit). She quickly realises that the Doctor sent her on a wild goose chase on purpose and she rushes back to the workshop with the Brigadier.
As they enter the old room, they see the Doctor clinging to the TARDIS console disappearing along with "Bessie".
Liz tries to regulate the power, but finds that it's been disconnected, trapping the Doctor wherever he's ended up. She goes with the Brigadier back to the control room and they tell Stahlman what's happened and demand that he reconnects the power. Stahlman is only pleased that the Doctor is out of his hair and he point blank refuses to divert any power away from the drill.
The Doctor recovers from his sudden dematerilsation to find himself still in the workshop. As he goes outside to find the others, he is shot at by UNIT soldiers. The Doctor is forced in a frantic chase around the complex as he flees for his life amidst UNIT personnel including Benton attempting to kill him.
He goes up on one of the cooling towers and is also attacked by the Primord versions of Bromley and Wyatt (who is somehow alive again).
The Doctor eventually finds a good hiding place but risks exposing himself when he sees Liz walk past. Only Liz now has brown hair and she's wearing a military uniform with the letters RSF on her sleeve. As the Doctor calls to her, she pulls a gun on him and summons the guards.
Sgt Benton and his guards take him with Liz to the Brigadiers office. The bemused Doctor is not getting any answers as to what's going on. When they get there, he tries to get some sense out of the Brigadier only to find that he now sports a massive scar, an eyepatch, and doesn't have a moustache. He insists on being called Brigade Leader and he is part of the Republican Security Forces (RSF).
The Doctor eventually works out that he's hopped over to a parallel universe where everything is slightly different. In this case, it seems that UNIT doesn't exist and the UK was overrun by the Nazi's in WW2. The Royal family have been shot and everyone toils under a fascist puppet government. There is still the Inferno project in this timeline, but it is run by using slave labour and is quite a few hours ahead of the "normal timeline".
As the Doctor tries to relate his predicament, Section Leader Liz Shaw denounces him as a spy.
The Doctor pleads with them to take him to Stahlman whom he can explain his theory to. They reluctantly agree, given his level of knowledge on the subject. Stahlman (now called Stahlmann) is just as stubborn in this world too and dismisses them.
The Doctor is put under the guard of Benton but as another drilling emergency occurs, the Doctor is forced to use Venusian Karate on him too in order to escape. Once in the control room, the Doctor forgoes true escape and instead tries to fix the computer until he's discovered by Benton.
The evil Liz stops Benton from shooting him, and allows the Doctor to continue to work on the machine. He gets it running again and it spews out ticker tape warnings of what's to come. That doesn't stop him getting interrogated afterwards by Liz and the Brigade Leader.
Nobody believes the Doctor's story, instead they are convinced he's a spy. They decide to lock him up until they can make him talk.
Back in the normal universe, Sir Keith Gold confronts Stahlman and is adamant that unless he can give assurances that the drilling will be slowed down, then he will go to the Minister and reveal his misgivings about the scientist.
Stahlman is as scathing as ever, and tells Sir Keith he can do what he likes. Sir Keith has no choice but to go.
Things turn out bad for the Doctor as it's revealed that Bromley, the scientist attacked in the nuclear power room is in the next cell. He's mutated into a Primord, and he comes after the Doctor, bending the bars to slip into his cell.
The Doctor manages to escape from Bromley's clutches and runs to the control centre. Once there, he yells out for them to stop the drilling, but it's too late. Stahlmann pulls a gun on them and they all watch in trepidation as the countdown goes to one. At that instant, a huge tremor shakes the entire base and green slime begins to ooze out of the pipe.
The Doctor and this reality's Sutton (who still has the same personality) try to contain the problem, but it's too late. Stahlmann attacks them both with a metal pipe and ends up getting trapped in the drilling room when the heat shields are lowered. He immediately grabs hold of the workers who were knocked out by the catastrophic events and he rubs their faces into the green goo, turning them into Primords.
The survivors turn to the Doctor for advice but he says its gone too far.
Now the Earth's crust has been penetrated, nothing will be able to seal it back up. The world will soon be burnt to a crisp. The only saving grace is (he tells them) that they can help him warn the alternate reality so they don't make the same mistake. The Brigade Leader is skeptical, but he insists that the Doctor takes him to see the TARDIS console.
Back in Earth 1, Sir Keith starts to question the directions his driver is taking him. The Driver confesses that he was ordered by Stahlman to take Sir Keith well outside London and then fake a break down so that he is delayed from speaking to the minister until the Inferno Project pierces the Earth's crust. Sir Keith orders the driver to take him straight to London and in return, he won't mention his involvement. The driver obeys, but as they are rushing he ends up crashing the car into another.
On Earth 2, once the Doctor has drained the reserve power on the console by demonstrating the TARDIS abilities, the Brigade Leader demands that the Doctor should take them all with him. The Doctor regrets that he can't because it will cause a paradox. The Brigade Leader chooses to be spiteful and takes them all back to the control centre.
Once there, the Primords attack and force the group to shut themselves into the Brigade Leaders office.
They get hold of Platoon Underleader Benton in the process though and turn him into a primord.
The Doctor comes up with a plan to escape, but the Primords attack again, smashing through the office window. The Doctor grabs hold of a fire extinguisher and "shoots" the attacking Primords with it. They use the extinguisher and fight their way out into the main room once again.
They disable the Primords and then send Petra, the Brigade Leader and Section Leader Liz to the atomic power room whilst Sutton and the Doctor fix the wiring that will pass the power through.
After many tense moments of fending off Primords with extinguishers whilst Petra does her work, they try to connect the power but it fails. They go and tell the Doctor who is waiting with Sutton at the TARDIS console, and the Brigade Leader freaks out. Petra decides to rush back to the Atomic Power room and give it one last shot. She finally succeeds and the Doctor is about to take off when the Brigade Leader pulls a gun on him.
They argue and the Brigade Leader ends up getting shot by Liz who tells him to take off. At that instant, the ground erupts and huge torrents of Lava are unleashed.
Thankfully, the Doctor makes it back with 3 hours until penetration, but the trip puts him in a coma. Liz and The Brigadier try to bring him around and get him to explain where he's been. He tries to warn them about some of the faults that have been coming up and advises them to reverse all systems immediately. Liz delivers the message and despite Stahlman being absolutely against the idea, Sutton convinces Petra to help him implement the Doctor's advice. A crisis is averted, but Stahlman is as stubborn as ever.
Over with the Doctor, Sir Keith gold turn up with a bandaged arm and explains about his accident. This gives the Doctor the understanding that whilst the two worlds run parallel, they are not linked together by having the same cause and effect. Knowing this, the Doctor rushes out to the control centre and starts to smash the equipment up. Stahlman gets him ejected from the room so the Doctor tells Liz to fix the computer and it will show them. Liz and Sutton decide to ignore Stahlman's insistence that everything will work, and they fix the computer, It tells them to stop the drilling immediately.
The drill is almost at penetration and Stahlman orders everyone out of the drilling room then he locks himself in. Once alone, he grabs some of the green goo and rubs it into his face, finally becoming a full blown Primord.
The Doctor is being taken away by UNIT soldiers, and he uses his Venusian Karate to nerve pinch them so he can escape. He runs into the Primord version of Bromley, He disables the monster and then rushes back to the control centre.
Stahlman opens up the heat shield and then attacks the workers. Sutton the Doctor and the Brigadier manage to kill him and the drill is finally stopped. Everyone cheers and the Doctor tells Sir Keith to fill the shaft in as soon as they can.
Some time later, Sir Keith and the Brigadier pay the Doctor and Liz a visit. Sir Keith tells them that the project is being abandoned and the centre is getting shut down. The Doctor arranges to use a little bit of remaining atomic power to try and get away with the TARDIS once more. The Brigadier is scornful of his reckless attempt to use the TARDIS which gets the Time Lord's back up.
He calls the Brigadier a few horrible names, flips the switch and disappears. Seconds later he reappears at the door. It turns out the TARDIS console sent him to the rubbish tip. He sheepishly asks the Brigadier to help him retrieve the console and tries to brush over all the horrible names he called him. Liz thinks this is hilarious and laughs at them as they leave.
Trivia
- Douglas Camfield's wife, Sheila Dunn played Petra Williams
- Douglas Camfield was taken very ill at the end of filming episode 1. He was rushed to hospital and found that he had abnormal heart murmor. Barry Letts had no choice but to step in and take on the roll of Director for the rest of the story (luckily, he'd lots of experience as a Director - see Enemy of the World). He still gave Douglas the credit though because the Director feared that if people knew of his condition, they wouldn't give him work.
- There is an infamous eye patch story that's done the rounds of many conventions. The story (as I understand it) goes that when Nicholas Courtney (the Brigadier) first put on his eye patch and swung around in his chair, everyone was wearing an identical eyepatch to put him off his lines. A consummate professional, Courtney carried on like everything was normal and it ended up with everyone else bursting out laughing.
- Although Jon Pertwee did all his own stunts, he actually suffered really badly from vertigo. He only got through the scene on the high tower by keeping his eyes on Derek Ware at all times.
- The scenery is great
- Chasing around the complex is pointless, but nice to have the Doctor doing actual action sequences
- Stahlman is so pig headed as to be infuriating - just the reaction they wanted from the audience
- The bit where Stahlmann rubs the crews face in the goo is actually quite disturbing
- The chance for Nicholas Courtney, John Levine and Caroline John to play the bad guys really gets us to see a different side of them and it's great.
What didn't work
- Why has Sir Keith got less authority than Stahlman when this is a Government project?
- Why does Stahlman grab the container of goo when there's a guy with heavy duty gloves standing right by his side?
- The convenient placement of fire extinguishers on the top of towers
- So the complex is the epicenter of the Earth's destruction but it survives at least 40 minutes past the eruption
- Sorry, but I can't let it slide. Who's ever looked at the Primords and thought, god they're scary?
Overall Feelings
So the final story in Season 7 comes and we're in yet another Government facility with yet another pioneering prjoect that's bound to go wrong. The only thing is I can't believe there is another Government project run like this. think about it, People go around borrowing nuclear power and bringing in experts willy nilly into a top secret area. Also, Stahlman is ordering Sir Keith around as if the Government wasn't the main funder of this project and could pull the plug at any time. Why would the Government send someone as soft as Sir Keith when this is of vital importance? Surely they'd have someone as self opinionated as Mr Chin (see the Claws of Axos).
Suspending any disbelief, this story tries to do good and suspenseful things, but at seven episodes long, we get a whole lot of people arguing with the bull headed Stahlman, interrogating the doctor who gives the same answers. When we finally get to the good stuff, it comes in episode 6, which means that there's a bit of an anti-climax when the Doctor returns to Earth 1.
I want to like this story, and there are significant bits of tension in there (e.g. the Doctor's vain attempts to convince everyone that the world is going to blow up and especially when he knows he can't take anyone back with him when it does). The problem is that they come at the wrong moments. On top of this, to make the story a bit more interesting, the production team threw in a rather lame explanation for the Primords and came up with possibly the worst special effects until Alpha Centauri (see The Curse of Peladon). Inferno is always a fan favourite, and it's one I've come back to more than once, but you really have to take a large pinch of salt to enjoy it.
Rating
7 out of 10
Rewatchability Factor
5 out of 10
Watch this if you liked...
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Consulting the Matrix
Do you think there should have been more parallel universe stories?