Synopsis:
Jamie, Zoe and Isobel have found themselves trapped in the sewers. There are two Cybermen further along one stretch of tunnel, who have just witnessed killing a policeman - and they see another lurching towards them from the opposite direction...
This is the Cyberman driven insane by exposure to the Cerebratron Mentor, however, and it staggers past.
Captain Turner has arrived, and he descends into the sewers accompanied by Sergeant Walters, Corporal Benton and Private Perkins.
They shout out, but Jamie and the others don't want to reply as it will alert the Cybermen to their presence. They stand between them and their rescuers.
The two Cybermen approach the UNIT party, who are about to defend themselves when the deranged unit emerges from the gloom and begins to attack the others.
Turner orders his men to attack using grenades, but Perkins panics and tries to flee. He is shot down by the Cybermen. The grenades are thrown and two of the creatures are destroyed - but the third begins to rise.
Jamie and the others are urged to run towards Turner before it can recover fully, and everyone ascends a ladder up to street level, emerging through a manhole. The damaged Cyberman pursues them and seizes Jamie by the leg. Corporal Benton throws another grenade down into the manhole after Jamie has broken free.
The Brigadier is with the Doctor in the laboratory at Watkins' home. The latter still cannot work out the function of the strange circuits found in all IE equipment. The Brigadier is waiting for Isobel's photographs before flying to Geneva to force some action against Vaughn.
She arrives with her freshly developed prints - but the Brigadier is less than impressed. He points out that they could be construed as fakes - an observation she is forced to agree with.
Packer is reporting to Vaughn about the incident in the sewers, but he is unconcerned. Even if UNIT attempt anything, it will be too late. He looks out over London, relishing the fact that he will soon control it along with the rest of the planet.
Gregory and Watkins are summoned to report progress on the Cerebratron Mentor. It now has directional control and more power, and the professor is appalled that his work has been transformed into a weapon. Vaughn decides to test it by blasting Watkins with crippling fear. Gregory stops him from going too far, which infuriates his employer. He argues that they need the professor unharmed to help produce copies of the machine, but Vaughn is already aware of this.
Watkins recovers and vows to kill Vaughn if given the opportunity. Vaughn orders Packer to hand the professor his gun, then goads him into shooting him. He fires into his chest at point blank range - but Vaughn is unharmed. He simply laughs as Watkins faints at his feet.
In the laboratory, Jamie sleeps as Isobel talks with Turner, recognising the folly of her expedition into the sewers. She has now heard the Doctor, Jamie and Zoe tell the Brigadier all about the Cybermen.
UNIT have had their communications relayed to the house, and a report comes in that Watkins is being transferred by two armed IE men, accompanied by Gregory.
Isobel urges the Brigadier to intervene and rescue her uncle, and the Doctor agrees as he could do with the professors' help. Turner is ordered to mount a rescue mission.
A short time later, a battered and bruised Gregory is reporting the freeing of the professor in a UNIT ambush to Vaughn. He insists that, given time, he can get the Mentor into production - but Vaughn knows this highly unlikely.
Packer takes Gregory down to the sewers, where he is executed by Cybermen.
Watkins is unable to tell the Doctor anything about the micro-monolithic circuits, but is able to describe his own machine in more detail. The Doctor realises that Vaughn intends to use it against the Cybermen, rather than as a weapon to help them. He then deduces that the mysterious circuits are emotional circuits - artificial nervous systems - which will be employed to paralyse the population of Earth and so allow the Cybermen to invade unopposed.
He demonstrates on paper how the Cybermen have a spaceship located on the dark side of the Moon. It will move around to the side facing the Earth and beam a signal at the planet's communications satellites - which will then broadcast the Cyber-hypnotic force across the globe via the circuits.
They realise that the invasion could begin at any moment, and the only defence will be a depolariser worn at the back of the neck. They begin searching the lab for neuristors with which to make a batch, so they at least can be protected.
With one hour to go, Vaughn is in his office, making final preparations with the Cyber-Director.
With thirty minutes to go, the Doctor's party are still trying to make more depolarisers.
Turner and Isobel are watching as dawn breaks over the city. They suddenly hear a strange electronic tone and go to alert the others - but all can now hear it. The streets of the city are relatively quiet at this time of the morning, but those few who are out and about begin to collapse into a catatonic state due to the alien signal. The Doctor realises that his depolariser has fallen off, and collapses before the others can help.
Across central London, Cybermen begin to emerge from the sewers onto the streets.
Unopposed, they march relentlessly through the city...
Data:
Written by Derrick Sherwin (from a story by Kit Pedler)
Recorded: Friday 25th October 1968 - Lime Grove Studio D
First broadcast: 5.15pm, Saturday 7th December 1968
Ratings: 6.5 million / AI 56
VFX: Bill King & Trading Post
Designer: Richard Hunt
Director: Douglas Camfield
Additional cast: Stacy Davies (Perkins), Pat Gorman, Derek Chafer, Charles Finch, John Spradbury, Terence Denville, Ralph Carrigan (Cybermen)
Critique:
Captain Turner was originally to have had another soldier named Harris with him, who was wounded by shrapnel from an exploding grenade.
The biggest change to the episode, from script to broadcast version, was the ambush by UNIT which freed Watkins. This was to have been a location sequence, using a country road rather than a London street. The professor is in an IE car with Gregory and a couple of security guards, and they are being tailed by Benton in another car. He radios ahead to Turner, who is sitting in a jeep further along the road, accompanied by three UNIT soldiers. The jeep pulls out in front of the IE car, with Benton blocking it from reversing. A gunfight then ensues as Watkins runs towards Turner. Gregory is about to shoot him in the back but is himself shot and wounded by Benton. The IE guards then ran off into the woods.
This was followed by a scene at Vaughn's office as Gregory reported back. In this instance, Vaughn was not unduly upset as he knew that Watkins could be recaptured in a few hour's time when the Cybermen activated their hypnotic signal.
The sequence was planned to be shot on Friday 13th September - the last day of location work, when production had moved to Ealing Studios. Douglas Camfield ran out of time, and so this action set-piece had to be dropped. Derrick Sherwin then added the brief sequence in which Gregory is killed by Cybermen in the sewers, in order to give Ian Fairbairn a decent death scene.
The montage of people being affected by the signal was to have included a milkman and a paper boy.
A number of photographs were taken of London locations on the morning of Saturday 7th September, to be used as establishing shots of the deserted city at dawn. This included Australia House at Aldwych.
Filming for the episode centred on the climactic scenes of the Cybermen launching their invasion in Central London. This took place on the morning of Sunday 8th September, commencing at 8.30am to try to avoid onlookers. As it was, word got out and Camfield found himself falling behind schedule to the crowds which built up.
The filming took place primarily around St Paul's Cathedral - St Peter's Hill and the adjoining Knightrider Street, which is the lane with a pub at the corner along which the Cybermen are seen to march (see images below).
Permission had been given to remove some of the manhole covers, which were replaced with lightweight props for the Cybermen to cast aside.
That afternoon the scenes on Fore Street, Moorgate, were filmed - of the UNIT rescue party arriving then departing with Jamie, Zoe and Isobel from the manhole. Pat Gorman played the Cyberman who attacks Jamie and has to be fought off with a grenade. You can see that his arm has extra padding, for when he is hit with a rifle butt.
A small number of extras were filmed on Distaff Lane and Queen Victoria Street (at St Nicholas Cole Abbey church and the College of Arms) - victims of the Cyberman hypnotic signal. These included a char lady, a window cleaner and a City gent, as well as a man slumped forward over the steering wheel of his car (an uncredited Derrick Sherwin).
It had been hoped to film the Cybermen at other famous landmarks, including Tower Bridge, Hyde Park, the Houses of Parliament and emerging from a number of Underground stations, but Camfield ran out of time as work had to be completed by 4pm.
Stacy Davies was a late replacement for actor Tony Wright, who had originally been booked to play Private Perkins.
The Cybermen were first seen to carry their guns in this episode - though they couldn't be used in studio as they fired a smoke charge which produced a burst of flame. They could only be used on location for safety reasons. These Cyberguns were the work of Bill King's company.
The battle in the sewer was accomplished mainly off camara through sound effects as it was being mounted in studio.
Two specially blurred photographs had been taken of Cybermen, representing Isobel's failed efforts to capture them on film.
Kevin Stoney agreed with Edward Burnham that his slap to the face should look as realistic as possible, and it certainly shows on screen.
One recording break was to allow Stoney to change his shirt from the pristine version to the one with smoking bullet holes.
The static images of deserted London locations were turned into slide captions, some of them supplied by the Visnews agency.
The end credits rolled over footage of the Cybermen marching along Knightrider Street.
If anything, it is the most iconic image from the classic era of Doctor Who. You can talk about Daleks on Westminster Bridge - but that was only a publicity photograph and the scene never actually appeared in the programme in that form.
Cybermen marching down the steps of St Paul's Cathedral is so iconic it was not only recreated for the 30th Anniversary documentary, using 1980's versions, but it reappeared in the series itself - in the closing moments of Dark Water.
Fans of a certain age were first introduced to the image above through Terrance Dicks' Doctor Who Monster Book (Target, 1975), a double page spread introducing the section "Monsters Who Came Back For More".
Of course, the Cybermen don't actually march down the steps of the cathedral itself until the Capaldi story. They're really a short distance away on St Peter's Hill, which ran down towards the Thames from St Paul's Churchyard. It is now simply Peter's Hill. The area has been heavily redeveloped, and it's now the pedestrianised route to the Millennium Bridge.
It is unfortunate that Camfield ran out of time and was unable to capture the Cybermen at other London landmarks, and the image of them emerging from the Underground would have been a striking one.
After the opening sequence in the sewers, neither of the Doctor's companions has much of a role to play in this episode. Indeed, Jamie actually falls asleep at one point whilst the Doctor discusses events with the Brigadier. The Doctor himself has very little to do this week, with Troughton only featuring in a handful of scenes, all in the professor's home laboratory. (It's a bit of a coincidence that Watkins just happens to be an expert in both the means to destroy Cybermen, and the means by which they intend to attack the Earth).
We see instead the beginning of a romance between Captain Turner and Isobel, and an excellent scene between Vaughn and Watkins - the one with the ferocious slap from Stoney which practically knocks Burnham off his feet. One slight problem with this sequence is, of course, the fact that Vaughn has a cybernetic body - but presumably only from the neck down. It was very lucky that Watkins chose to shoot him in the chest and not in the head. (Either that or he is cybernetic from head to toe, so didn't care where the professor shot him).
If they had managed to film the rescue sequence, how would they have fitted it in? The episode as it stands runs to 23' 20" - the shortest of the eight - but the UNIT ambush as written would surely have taken us up to or over the 25 minute mark. I suspect that it was this scene between Vaughn and Watkins which might have been expanded to make up for the missing material. It's a character scene, not vital to the plot. We already know that Vaughn has a cybernetic body as he said so in the last episode - "My body may be cybernetic but my mind remains human. That is final!".
The scene of Gregory's demise in the sewers is very rushed - so much so that one guidebook even questioned if it was Ian Fairbairn who appears, claiming it doesn't look like him.
It's a pity that the UNIT ambush sequence had to be dropped. It would have added some extra action, but this episode has already gone down in Doctor Who history for its closing moments.
Trivia:
- The ratings see only a slight dip in viewers, but there is a small improvement in the appreciation figure.
- Derek Chafer had previously played a Cyberman in The Moonbase.
- Ian Marter reinstated the rescue of Watkins for the Target novelisation - a sequence which ends with Gregory being shot dead by Benton.
- The first of two movie-style posters for this story by the talented Oliver Arkinstall-Jones:

































