Series 21: The Twin Dilemma

After his regeneration, the Doctor starts behaving erratically. He goes to the wardrobe and looking for a new outfit and finds a glaring, mismatched, brightly coloured coat to which he immediately takes a shine. Peri tells him that he could not go outside wearing such an awful garb, to which the Doctor takes offence.

Two twins, Romulus and Remus Sylveste, receive a visitation from a mysterious old man called Professor Edgeworth. They question how he managed to get inside their house; he tells them he will return when their father is there, then proceeds to abduct them and the trio disappear. They arrive on a spacecraft in deep space. Edgeworth then communicates with his superior, a slug-like creature called Mestor, who instructs Edgeworth to take the twins to Titan 3.

In the console room, the Doctor has a funny turn, quoting a poem about a Peri — a good and beautiful fairy in Persian mythology, but one which used to be evil. The Doctor accuses her of being evil, and of being an alien spy before rushing toward her and throttling her. He catches a sight of his own manic face in a mirror and collapses in a heap, releasing Peri. When she tells him that he tried to kill her, he initially denies he could be capable of such an act, but seeing how terrified of him she is, decides he must become a hermit on the desolate asteroid Titan 3.

The twins' father contacts the authorities; he found Zanium in their room — a sure sign of intergalactic kidnap. A Commander Lang begins the pursuit and soon finds a suspicious ship previously reported missing. He tries to contact it, but it enters warp drive — something that class of ship is not designed to do.

On Titan 3, as the Doctor contemplates a thousand years of solitude and Peri expresses her disapproval, they hear the crash landing of a craft. Examining its wreckage, they find the concussed body of Commander Lang. They take him back to the TARDIS where he reveals his whole squadron has been destroyed. Believing the Doctor to be responsible, he points his gun at the Doctor and threatens to kill him…

Peri pleads with Lang, telling him that the Doctor had in fact saved him, but he faints away. The Doctor is not keen to treat Lang, more concerned for his own life, but eventually agrees to Peri's persuasion.

Edgeworth argues with Romulus and Remus, making them do Mestor's work. He scolds them for setting up a distress signal, so they are not allowed to use electronic equipment to solve the equations they have been set. An image of Mestor appears and gives the twins a more blunt threat — work for him or have their minds destroyed.

On the TARDIS scanner, the Doctor and Peri see a building — something which has no place on an uninhabited asteroid. Leaving Lang behind, they find a tunnel which may lead to the building, but on exploring find two aliens wielding guns. The Doctor cowers in fear and pleads with them not to shoot him. They are led off and are brought before Edgeworth. The Doctor claims to be a pilgrim to Titan 3, but Noma, one of the aliens, says they are spies and should be shot. The Doctor suddenly recognises Edgeworth as an old friend - Azmael, master of Jaconda, whom he last saw two incarnations ago. When the Doctor sees Romulus and Remus and discovers it is Azmael who has abducted them, he is disgusted. Azmael teleports away with the twins and the aliens, leaving the Doctor and Peri locked in the building. The Doctor starts to break the lock's combination, but Peri discovers Noma has set the base to self-destruct. The Doctor improvises a solution to teleport them back to the TARDIS. Peri makes a successful return, but the Doctor has not appeared when she sees the base explode on the scanner…

A glimpse of the Doctor is seen appearing in the TARDIS; he was delayed returning because he was using Peri's watch to synchronise their arrival, but the watch had stopped. The Doctor is surprised at Peri's compassion when she thought he had died.

On Jaconda, Mestor is seen putting one of the bird-like Jacondans to death for a petty offence of stealing a few vegetables. Soon, the TARDIS arrives, but instead of the expected beautiful planet the Doctor is expecting, he, Peri and Lang find a desolate wasteland covered with giant Gastropod trails. The Doctor is reluctant to go to the palace, scared for his own life, but is persuaded to take Lang there in the TARDIS. In the palace corridors they see murals depicting Jaconda's history, depicting the slugs of myth - but it appears that they are now all too real. After avoiding Gastropods, Lang gets stuck in their slime trail.

Azmael takes the twins to his laboratory and shows them a store room full of Gastropod eggs. Mestor arrives and tries to persuade them that his aims are benevolent. Azmael begs him to stop reading his thoughts and stop Noma watching his every move. He agrees and leaves. Azmael explains to the Twins that Mestor usurped him as leader of Jaconda and outlines a plan to draw two outlying planets into the same orbit as Jaconda. The Twins' genius is required to stabilise those planets in their new orbit. The Doctor, leaving Peri and Lang behind, finds Azmael's lab. In a manic fit of pique, he attacks Azmael, but is restrained by a Jacondan and the Twins. The Doctor apologises to Azmael but demands to know what is going on.

Meanwhile, Peri is captured by Jacondan guards and brought before Mestor. When Lang escapes to Azmael's lab and informs them what has happened, the Doctor finally shows compassion for her when he thinks she might die…

Mestor refrains from killing Peri immediately, finding her appearance pleasing. Jacondan guards arrive in Azmael's lab and seize the Doctor. The Doctor tells Mestor that he ought to allow him to assist with the dangerous operation of moving the planets, as a single mistake could blow a hole in that corner of the universe. Back the laboratory, Azmael informs the Doctor the details of the plan to bring the planets into the same orbit — they will be placed in different time zones using time travel technology that Mestor stole from Azmael. The Doctor realises that, as the other planets are smaller than Jaconda, bringing them closer to Jaconda's sun will lead to catastrophe. The Doctor enters the egg storeroom, and is disturbed that they have no nutritional mucus. He tries to cut one open with a laser cutter; the shell is impenetrable, but the egg reacts slightly to the heat. The Doctor realises they have been designed to withstand the heat of an exploding sun — the explosion of the Jacondan sun will scatter the eggs throughout the universe. When they hatch, the Gastropods will conquer the universe.

The one remaining Jacondan in the lab collapses dead, his mind burnt out. Mestor had been using him as a monitor, and knows the full details of what has been discussed. Peri, Lang and the Twins return to the TARDIS, whilst the Doctor and Azmael go to confront Mestor. When Mestor refuses to abandon his plans, the Doctor hurls a vial of acid taken from the lab at him, but a force field protects Mestor from any harm. Mestor threatens to possess the Doctor's mind and body, and demonstrates by taking control of Azmael's body. Azmael tells him to destroy Mestor's body before he can return to it, which he does with a further vial. Then Azmael, in his last regeneration, forces himself to regenerate — killing himself — and in doing so destroys Mestor. Dying, Azmael says he has no regrets and that one of his fondest memories was a time spent with the Doctor by a fountain.

The Doctor and Peri return to the TARDIS; Lang decides to stay behind on Jaconda to assist with their rebuilding. When Peri tells the Doctor off for being rude, he reminds her that he is an alien, with alien sensibilities: "I am the Doctor… whether you like it or not!"

Cast
Doctor Colin Baker (Sixth Doctor)
Companion Nicola Bryant (Peri Brown)
Guest stars
Maurice Denham — Edgeworth
Edwin Richfield — Mestor
Kevin McNally — Hugo Lang
Dennis Chinnery — Sylvest
Gavin Conrad — Romulus
Andrew Conrad — Remus
Seymour Green — Chamberlain
Oliver Smith — Drak
Barry Stanton — Noma
Dione Inman — Elena
Helen Blatch — Fabian
Roger Nott — Prisoner
John Wilson — Jacondan Guard

Production
Writer Anthony Steven
Director Peter Moffatt
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6S
Series Season 21
Length 4 episodes, 25 minutes each
Originally broadcast March 22–March 30, 1984

Series 21: The Caves of Androzani

The TARDIS lands on the desert planet Androzani Minor. The Doctor explains to Peri that he has been there before in the past or future. Peri then says that the Doctor is a very confusing person to travel with and then calls him a pain. Examining the ground, the Doctor finds traces of fused silica and surmises that visiting spacecraft must have arrived. He then points out to Peri a set of tracks leading to some nearby caves. They go to investigate further.

While in the cave, Peri slips and falls into a strange sticky substance which makes her legs sting. The Doctor then helps her brush it off with his hands and tells her not to get caught in any more of the stuff. Moving deeper into the caves, they find piles of weaponry belonging to a gang of gun runners led by Stotz and his henchman, Krelper. As the Doctor and Peri begin to inspect the weapons, they are captured by Captain Roones who has them brought before General Chellak.

The General, holographically, communicates with Trau Morgus, the head of several conglomerate companies back on Androzani Major. Unknown to Chellak, Morgus, whose company is publicly funding the war against the gun runners, is also a patron of Stotz's gang. When Chellak informs him that Captain Roones had captured two gun runners he becomes concerned. However, when he sees the Doctor and Peri he changes his attitude and then orders that they be shot immediately. Chellak initaily protests on the grounds that he believes that they could be a source of useful information, but he gives in to Morgus' demands and orders the execution of the Doctor and Peri. Chellak has Major Salateen place the Doctor and Peri in detention and organize their execution.

Unknown to them, Chellak's conversation with Morgus has been monitored by a black-garbed and masked figure who notices Peri's beauty. He starts to assemble components in his laboratory and orders androids four and nine to join him. Meanwhile, Peri is restless in the detention. Her legs and the Doctor’s hands are coming out in blisters. The Doctor is suspicious of Salateen, and then he ponders as to why Morgus was so concerned that Chellack caught two gun runners, and then once he saw them, he lost all interest. As the Doctor laments on Morgus' "insult", someone enters their cell via a secret door.

Some of Chellak's men escort the confiscated weapons back to base, but Stotz and Krelper gun them down. The weapons are disposed of before Chellak can recapture them and the two leave before any reinforcements can arrive.

Morgus receives the President of Androzani Major in his office and gives him some spectrox. Spectrox, a drug that at least doubles the life span of humans, is the purpose for the Android Rebel War. However, the war is holding up spectrox supplies and the public demand for the drug is turning "ugly". The President is considering offering an armistice to Sharaz Jek, the man responsible for the war. For some unexplained reason, Morgus becomes horrified. On Androzani Minor, the Doctor and Peri are placed before a firing squad, and are executed.


--------------------------------------------------------------------------------

However, it is revealed that they were not the real Doctor and Peri, but androids. The Doctor and Peri have been rescued by the figure in black, Sharaz Jek. Although attentive to Peri, he is unstable and apparently insane with loathing for Morgus, whom he blames for all his problems. He declares he will stop the war only when he has Morgus’s head delivered to him. He boasts to the Doctor that he knows everything that Chellak is planning and is confident that he can hold out for long enough against the army. The Doctor and Peri meet the real Salateen, who has been held captive for some time while one of Jek’s androids takes his place at Chellak’s side.

Outside the cave, Stotz and Krelper argue. Krelper thinks they should cut their losses and leave, and the other gunrunners agree with him. Stotz manages to avert mutiny by promising his men they will be compensated for the lost shipment.

The Doctor complains about a cramp, like the one Peri had before. Salateen asked if they had stepped into any spectrox nests. When the Doctor describes a large sticky ball, Salateen laughs and tells the Doctor and Peri that they have contracted spectrox toxemia from touching raw spectrox. The Time Lord grabs Salateen and demands an explanation. Salateen stops laughing and explains that spectrox nests are deposits left from colonies of bats which live deep in the caves under Androzani Minor. He also says that cramps are the second stage of spextrox toxemia. Salateen initially tells them that there is no cure, but then admits that there is an anti-toxin, discovered by Professor Jackij - the milk from a queen bat. The problem is that all of the bats have gone to the deep caves, where there is no oxygen. Furthermore, to get to that level they must face the magma creature.

Jek is contacted by Stotz who demands payment in full for the lost consignment of weapons. He tells Stotz that he will meet him in person to discuss the dispute. As he begins to leaves his base, he overheard Peri ask the Doctor why does he wear a mask. Jek become irritated and explains that he wears a mask because he was hideously burned when Morgus trapped him in a mud-burst. He survived by getting to a baking chamber to escape the full force of the mud-burst. He was scalded near to death, but he lived to "one day avenge himself on that inhuman monster" Morgus.

Jek goes to meet Stotz to argue over the amount of payment for the recent shipment of lost weapons, ultimately agreeing to pay half price. In his absence, the Doctor is able to disarm the guarding android as it is programmed to recognize humans and his anatomy is different. As he makes his way to get the queen bat milk himself, the Doctor is wounded when he, Salateen and Peri are attacked by another android while moving through the caves. Salateen hurries Peri off to General Chellak, and the Doctor then has a close encounter with the magma beast as it attacks Stotz’s gun runners who foolishly attempt to find Jek’s private store of spectrox.


--------------------------------------------------------------------------------

The Doctor is recaptured by Jek who uses his androids to torture him until he discloses the whereabouts of Peri. Stotz wants to take the Doctor back with him to Androzani Major and Jek agrees. Meanwhile Chellak and Salateen are planing to feed Jek disinformation through the android Salateen and through broadcasts to Morgus regarding an attack on a fake location for Jek’s base. In this way they hope to catch Jek unawares when they mount an attack on him in his true location. On Stotz's spacecraft, the gun runner reports to his boss, Morgus. Morgus sees the Doctor on the ship and regards this as proof that the President must suspect him. He therefore kills the President by pushing him down a lift shaft and makes plans to travel to Androzani Minor to negotiate with Jek in person.

Stotz’s ship takes off, but the Doctor manages to free himself and pilot it back to Androzani Minor. As the Doctor takes control of ship, he begins to feel a sensation and his eyesight become temporarily blurred. The spectrox is damaging the Doctor's body and his body is warning him of the need to regenerate. The Doctor holds the regeneration back and fights it off so he can focus on saving Peri. As the Doctor approaches Androzani Minor, an irate Stotz, who is locked out of the control room, demands that the Doctor open the door. The Doctor simply ignores his demands and reminds Stotz to "find something firm to hang on to", as the Time Lord is "out of practice with manual landings". Stotz manages to cut his way into the control room and he points a weapon at the Doctor, demanding that he step away from the controls. The Time Lord says that Stotz's argument is not persuasive as he is already dying.


--------------------------------------------------------------------------------

The Doctor crashes the ship and, while all of the gun runners are disoriented, he escapes on to the surface of Androzani Minor. As the Doctor races to find Peri, he is chased by Krelper and another gun runner. He eventually collapses and falls, but just as they're about to finish him off, a mud burst begins and they retreat. The Doctor hauls himself to his feet and staggers towards the caves.

Meanwhile, Jek recaptures Peri who is by now very weak indeed. He raves about everything being Morgus's fault. Chellak and Salateen make their way towards Jek's base. However, the troops are ambushed by his androids. Salateen is killed along with some of the troopers, but Chellak pushes on. Eruptions on the surface herald the start of a mud-burst and Krelper returns to the spaceship to find Stotz and Morgus in conversation. Krelper is sent away and Morgus offers Stotz a share of the spectrox. He intends to take Jek’s private store of the drug and live on another planet in the Sirius system.

Jek’s androids are being overrun by Chellak's men. Jek goes to see if any of them can be repaired, but he too runs into the troops. Chellak chases Jek back to his lab where the two men struggle. Jek’s mask is pulled off and Chellak recoils in terror. The distraction allows Jek to push him outside into the path of a mud-burst, where he is killed.

Morgus calls his office and discovers to his surprise that his secretary, Trau Timmin, has taken control of his business. She has "deposed" him as the Chairman and Chief Director of Sirius Conglomerates and has given evidence against him. All of Morgus' power is gone and all his funds have been sequestered. Upon the news of Morgus' fall from greatness, Krelper and the other gun runner rebel. Krelper wants to return to Androzani Major with the spectrox they already have. Stotz guns him down, along with the remaining gunrunner. He and Morgus then go to the cave system to try to find Jek's spectrox store.

Jek is mourning Peri, who is almost unconscious when the Doctor arrives. The Doctor tells him that he is going to get the bat's milk and Jek gives him a half empty oxygen cylinder and directions to the lower levels of the caves. The Doctor negotiates the caves and crevasses — stumbling across the mysteriously dead body of the magma beast as he goes — until he reaches a dormant queen bat, and manages to fill a vial with enough milk to save himself and Peri.

Jek, trying to keep Peri's temperature down, activates a set of extractor fans, but Stotz and Morgus hear the sound and follow it to its source. Jek throws himself at Morgus and forces his head into the extractor fans, killing him and causing the fans to short circuit. Stotz shoots Jek but the android Salateen arrives and kills Stotz. As fire breaks out in the lab, Jek dies in the arms of the android Salateen. The Doctor returns with the milk in time to carry Peri out.

As the planet erupts around him, the Doctor manages to carry Peri back to the TARDIS. However, he accidentally spills the precious antidote while his blister filled hands were searching for the TARDIS key. The Doctor manages to save only half of the milk, meaning that only one of them could be cured. Without hesitation, he gives Peri the milk. She recovers quickly and sees the Doctor lying on the TARDIS's floor. The Doctor sees that Peri is well and says "Peri, well I see that Professor Jackij knew his stuff." Peri then asks the Doctor if he got the bat's milk and he confirms that he did. Peri then presses the Doctor into telling her where the antidote was. He simply tells her "Finished...Only enough for you." Peri looks on in horror and urges the Doctor not to give up and that there must be something they can do to save him. The Time Lord becomes doubtful and says "I might regenerate, I don't know... It feels different this time."

As the Doctor slowly rests his head, he enters a hallucinatory state. He first sees a small image of Tegan who says "What was that you always told me, Doctor? Brave heart?" Then an image of Turlough appears and says "You musn't die. Too many of your enemies would delight in your death." Then Kamelion appears and simply says "Turlough speaks the truth." Then an image of Nyssa of Traken appears and says "You're needed, you musn't die, Doctor." The final friendly image to appear was Adric who adds to Nyssa's statement by saying "You know that, you know that." The Doctor, who has long been haunted by the tragic loss of his Alzarian companion, cries out his name. However, the Doctor hears a cold and sinister laugh which drives all of the images of his companions away. It is the image of the Master. The Master begins to goad and taunt the Doctor, saying; "No my dear Doctor, you must die. Die, Doctor. Die, Doctor!" As the Master continues to laugh, his image becomes larger and the Doctor's face begins to glow. In a flash, the Doctor regenerates and awakens in the TARDIS to a new face and a shocked Peri. Peri attempts to ask the Doctor what happened. The Doctor turns towards the camera and says "Change, my dear, and it seems not a moment too soon..."

Cast
Doctor Peter Davison (Fifth Doctor)
Colin Baker (Sixth Doctor)
Companion Nicola Bryant (Peri Brown)
Guest stars
Christopher Gable — Sharaz Jek
John Normington — Morgus
Barbara Kinghorn — Timmin
David Neal — The President
Maurice Roëves — Stotz
Roy Holder — Krelper
Martin Cochrane — Chellak
Robert Glenister — Salateen
Ian Staples — Soldier
Anthony Ainley — The Master
Matthew Waterhouse — Adric
Sarah Sutton — Nyssa
Janet Fielding — Tegan Jovanka
Mark Strickson — Turlough
Gerald Flood — Voice of Kamelion

Production
Writer Robert Holmes
Director Graeme Harper
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6R
Series Season 21
Length 4 episodes, 25 minutes each
Originally broadcast March 8–March 16, 1984

Series 21: Planet of Fire

On the desert world of Sarn, robed natives worship the fire god Logar and follow the Chief Elder, Timanov, who demands obedience. Those who dissent are known as Unbelievers, and two of them, Amyand and Roskal, cause unrest when they claim to have ventured to the top of the sacred fire mountain but not found Logar. One of the Sarns, Malkon, is known as the Chosen One because of the unusual double triangle symbol burnt into his skin: he is also unusual for having been found as a baby on the slopes of the fire mountain.
The same triangle symbol is found on a metal artefact uncovered in an archaeological dig in Lanzarote overseen by Professor Howard Foster. His stepdaughter Peri Brown is bored with the dig and wants to go travelling in Morocco and when he seeks to prevent this she steals the strange artefact and tries to swim for freedom. Fortunately for her the TARDIS has landed nearby – responding to a distress call sent by the strange artefact - and Turlough sees her drowning and rescues her. Going through her possessions as she recovers he finds the artefact and acknowledges the same triangle symbol is burnt into his own flesh. The Doctor returns to the TARDIS after attempting to triangulate the source of the signal being emitted by the artefact, and the ship dematerialises, seemingly on its own. It soon arrives on Sarn and the Doctor and Turlough set off to explore.
The Doctor's other companion, the android Kamelion, has meanwhile made mental contact with its old controller, the Master, who attempts to assert his control and change Kamelion's appearance from that of Howard. Kamelion tries to warn Peri of the Master but the Time Lord succeeds in gaining control. She flees the TARDIS with the creature in pursuit as the rumblings of the volcanoes of Sarn gather ferocity.
In the Sarn colony Timanov has damned the Unbelievers to be sacrificed to appease Logar and stop the tremors. They flee to a secret base in the mountains which is filled with seismological apparatus and which the Doctor and Turlough stumble across. The Doctor informs the Unbelievers that the tunnels which have been their refuge are volcanic vents which will soon fill with molten lava. It is also established that Turlough is of the same race as those who colonized the planet, and when the indigenous people see his Misos Triangle, they greet him as a second Chosen One. Turlough realises Malkon may be his brother and becomes even more worried when Peri turns up and mentions the Master.
Another important figure in Sarn mythology is the Outsider, a promised prophet, and the Master/Kamelion fulfils this role admirably. He convinces Timanov of the appropriateness of harsh action and when the Doctor arrives with the Unbelievers they are all seized for burning. However, Malkon and Peri arrive shortly afterward and end this assault, though not before Malkon has been injured. Turlough is aghast when he finds his relative has been shot and the Doctor presses him for as much information as he has on the strange circumstances of Sarn. It seems it is a long abandoned Trion colony planet, and that Turlough, a Trion, suspects some of his family were sent here after a revolution against the hereditary leading clans of his homeworld. He supposes his father died in a crash but that Malkon survived, while he himself was sent in exile to Brendan School In England, overseen by a Trion agent masquerading as a solicitor in Chancery Lane.
The Master/Kamelion has meanwhile seized Peri and uses her to transport a black box into the control room of his TARDIS. It contains a miniature Master – the real thing – who has been shrunken and transformed by a disastrous experiment with his Tissue Compression Eliminator. The Master thus re-established the psychic link with Kamelion to gain the power of movement and has manoeuvred the robot to Sarn so that he can take advantage of the restorative powers of the Numismaton gas within the fire mountain.
Turlough realises the imminent volcano bursts will destroy the Sarn colony so nobly uses a functioning communication unit to get in touch with Trion and plead for a rescue ship to evacuate Sarn. In doing so he abandons his own freedom. When the ship later arrives, the Sarns all depart, along with Turlough and Malkon. They have both been pardoned in an amnesty issued by the new Sarn government. The only one to remain on the planet and face the erupting volcanoes is Timanov, now sure to die, his faith in tatters.
The Doctor meanwhile succeeds in weakening the Master's hold of Kamelion, and interrupts the numismaton experiment. He adds calorific gas to the numismaton surge and seemingly burns the Master alive. The Doctor also puts the terminally wounded Kamelion out of its misery. He returns to the TARDIS with a heavy heart, but with a new companion, Peri, for company.

Cast
Doctor Peter Davison (Fifth Doctor)
Companions Mark Strickson (Vislor Turlough)
Gerald Flood (Kamelion)
Nicola Bryant (Peri Brown)
Guest stars
Anthony Ainley — The Master
Dallas Adams — Howard
Michael Bangerter — Curt
Peter Wyngarde — Timanov
Barbara Shelley — Sorasta
James Bate — Amyand
Jonathon Caplan — Roskal
Edward Highmore — Malkon
Max Arthur — Zuko
John Alkin — Lomand
Simon Sutton — Lookout

Production
Writer Peter Grimwade
Director Fiona Cumming
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6Q
Series Season 21
Length 4 episodes, 25 minutes each
Originally broadcast February 23–March 2, 1984

source: wikipedia

Series 21: Resurrection of the Daleks

The year is 1984, and a group of humanoids are running down a London alley. As they attempt to escape, they are gunned down by two policemen led by Commander Lytton. Two of the humanoids, Galloway and Quartermaster Sergeant Stein, escape to a warehouse where a time corridor is situated. Galloway is killed, leaving Stein alone.

Lytton transports back to his battle cruiser and prepares to attack a prison space station whose only prisoner is Davros, the creator of the Daleks.

Meanwhile, the Doctor, Tegan and Turlough are being dragged down a time corridor in the TARDIS (following on from the events at the end of Frontios). When the time machine lands, they find themselves in the London docklands in 1984.

In the meantime, the Daleks try a direct frontal assault on the prison station which yields poor results (and several Dalek casualties, as the station crew led by Dr. Styles, the CMO; and Lt. Mercer, fight back with considerable force). Lytton then persuades the Dalek Supreme to use poisonous gas to get the crew out of the way. The plan proves to be a success and the Daleks have little trouble taking over the ship. Following orders, Watch Officer Osborn attempts to kill Davros, first using an automated system that proves not to work, and then in person. However, Lytton and an engineer break into the cell and kill Osborn before she can complete her mission, instead releasing Davros from his cryogenic imprisonment (into which he was placed following the events of Destiny of the Daleks).

The Doctor and his friends have by now met a traumatised Stein, who joins them in returning to the warehouse to hunt for the end of the time corridor. There they meet a military bomb disposal squad, called in after builders uncovered what they thought to be unexploded bombs (and which the Doctor correctly predicts are in fact alien artifacts). While the others are distracted, Turlough stumbles into the time corridor, ending up on the Dalek ship.

Having learned that the Doctor is in the warehouse, the Supreme Dalek orders a Dalek to be dispatched to detain him. The Dalek travels through the time corridor and appears as if from nowhere. The Doctor yells at everyone to take cover as it prepares to exterminate them. (In the original four-part version of the story, this formed the cliffhanger ending of Part One.) The Dalek kills several of the squad's men before the Doctor advises them to focus their fire on its eyestalk, blinding it. In the resulting struggle, the humans push the Dalek out of the warehouse window and it explodes on hitting the ground; Tegan suffers a head injury and blacks out.

Meanwhile, on the prison station, only Styles, Mercer, and two guards are left alive of the original crew. Disguised in uniforms taken from Lytton's guards, they plan to blow up the station via its self-destruct system.

Speaking to Lytton, Davros explains that his cryogenic sentence lasted for "90 years of mind-numbing boredom." He then vows to take his revenge upon "that meddling Time Lord" — the Doctor. Lytton insists he is in their grasp. While Davros's travel chair is undergoing maintenance by the engineer (Kiston), Lytton explains that the Daleks lost their war against the Movellans due to the development of a virus that specifically attacks Dalek tissue, and have awoken Davros to find a cure. Despite Lytton's reservations, Davros demands that he remain on the prison ship while working on the virus, as it may be necessary for him to be refrozen. When Lytton leaves to discuss this with the Supreme Dalek, Davros uses a hypodermic-like mind control device to take control of Kiston.

Meanwhile, the Doctor and the members of the bomb disposal squad, having brought the remnants of the destroyed Dalek machine back inside, are searching for the Kaled mutant that was housed inside it. They eventually find and kill it but only after it wounds one of the squad's men. While the medical officer of the squad looks after the victim and a recovering Tegan, the Doctor and Stein head into the TARDIS to find out what is happening at the other end of the time corridor.

The TARDIS materialises inside the Dalek ship and, narrowly avoiding being captured by a guard, the Doctor tells Stein that they should find Turlough and make a swift exit. But Stein, suddenly no longer a stuttering coward, points his own weapon at the Doctor, revealing that he himself is an agent of the Daleks.


--------------------------------------------------------------------------------

A squadron of Daleks close in to exterminate the Doctor, but Lytton, entering, informs them that the Supreme Dalek has ordered that the Doctor must not be killed - yet. The Daleks confirm this as the truth. The Daleks and Stien lead the Doctor away.

On the prison ship, Turlough joins forces with the remnants of the crew, informing them of the existence of the time corridor, as a possible way of escaping the effects of the ship's self-destruct.

On Earth, the man attacked by the Dalek creature is behaving very strangely and wanders away mumbling nonsense. The group commander, Colonel Archer, decides to radio for help, although his own radio is dead. He heads outside and finds two policemen (unbeknownst to him, Lytton's associates) and asks for assistance. As he tries the radio, a policeman holds a gun to his head...

The Daleks reveal their plan of cloning the Doctor and his companions, and to use the clones to assassinate the High Council of Time Lords on Gallifrey. Stien begins the mind-copying sequence while the Doctor tries to talk him into resisting his Dalek mind conditioning. While this is going on, Styles and the two station guards are killed when trying to activate the station's self-destruction system.

Back on Earth, Colonel Archer returns to the warehouse, obviously under Dalek control. Tegan makes an escape attempt, but is soon recaptured by the policemen and taken through the time corridor to the Dalek ship. The squad's scientific advisor, Professor Laird, is shot while trying to flee the soldiers.

Meanwhile, in the duplication chamber, Stein is overcome with confusion: the Doctor has realized that Stein's conditioning is unstable and begins challenging his ability to think for himself. Just as Stein's mind-copying sequence nears completion, he breaks his conditioning and stops the process, freeing the Doctor. The Doctor finds Turlough and Tegan, and they return to the TARDIS along with Stein and the last surviving station crew member. Rather than depart, the Doctor decides he must destroy Davros once and for all. With Stein and Lt. Mercer he heads to the station lab, leaving Tegan and Turlough in the TARDIS, which he has surreptitiously programmed on time delay to return them to the warehouse.

The Doctor confronts Davros in the lab, but his chance to kill him is lost when Stein's conditioning re-asserts itself long enough to let Lytton's troops kill Lt. Mercer. Horrified by his actions, Stein refuses to accompany the Doctor back to the time corridor, and runs off into the station.

Davros' army (now including a biochemist, Kiston, a soldier, and two Daleks) is growing and he dispatches his Daleks to Earth. Anticipating resistance from the Daleks not loyal to him, Davros breaks opens a capsule of the Movellan virus. Two Daleks then enter with the intention of exterminating him, but are themselves killed instead by the virus.

Back at the warehouse, a huge battle is taking place between Davros' Daleks and those loyal to the Supreme Dalek. The TARDIS has arrived and the Doctor (having returned through the time corridor) now knows that the alien artifacts discovered earlier on were in fact canisters containing the Movellan virus. He opens a canister that Tegan and Turlough have removed and brought into the TARDIS, and sneaks it behind the Daleks. Soon they all start to die.

Lytton has escaped, and gleefully watches the Daleks' demise. He swaps his Dalek uniform for that of a policeman, and joins his two fellow "bobbies" on their next vigil. Back on the station, Davros prepares to use an escape pod to flee from the station, but the Movellan virus attacks and seemingly kills him.

The Daleks are dead, and Tegan is appalled at the deaths that have taken place. The Dalek Supreme appears on the TARDIS scanner and threatens the Doctor, claiming that the Daleks have duplicates of prominent humans all over Earth, and it is just a matter of time before Earth falls.

Meanwhile, a wounded Stein is trying to activate the self-destruct sequence. Just as he is about to finish, the Daleks enter and exterminate him. With his last ounce of life, he leaps onto the console, completing the sequence and destroying both the station and the Dalek ship.

The Doctor calls for them all to leave, but Tegan says no — this has been one massacre too far. She no longer enjoys her adventures and wants to give it up, so she runs away. The Doctor is saddened by this, and he and Turlough leave. As the TARDIS vanishes, Tegan runs back, remembering the Doctor's old admonishment: "Brave heart, Tegan." She calls out to the empty air that she will miss him.

Cast
Doctor Peter Davison (Fifth Doctor)
Companions Janet Fielding (Tegan Jovanka)
Mark Strickson (Vislor Turlough)
Guest stars
Terry Molloy — Davros
Rodney Bewes — Stien
Rula Lenska — Styles
Maurice Colbourne — Lytton
Jim Findley — Mercer
Sneh Gupta — Osborn
William Sleigh — Galloway
Leslie Grantham — Kiston
Chloe Ashcroft — Professor Laird
Del Henney — Colonel Archer
Philip McGough — Sergeant Calder
Roger Davenport — Trooper
John Adam Baker, Linsey Turner — Crewmembers
Brian Miller, Royce Mills — Dalek Voices
John Scott Martin, Cy Town, Tony Starr, Toby Byrne — Daleks

Production
Writer Eric Saward
Director Matthew Robinson
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6P
Series Season 21
Length 2 episodes, approx. 46 minutes each
Originally broadcast February 8–February 15, 1984

source: wikipedia

Series 21: Frontios

The TARDIS lands in the far future, on the fictional planet Frontios, where some of the last vestiges of humanity are struggling for survival. The planet is being attacked by meteorite showers orchestrated by an unknown enemy responsible for the disappearance of several prominent colonists, including the colony’s leader, Captain Revere. After witnessing Revere being “eaten by the ground,” Security Chief Brazen engages in a cover up. To the public, Captain Revere died of natural causes. After a state funeral, Revere’s son, Plantaganet, assumes the leadership of the colony.

The TARDIS is mysteriously affected by a meteorite storm and dragged down to the planet by gravity. The Doctor, Tegan and Turlough emerge, in the middle of the bombardment, to investigate. Despite his earlier reservations about getting involved, the Doctor violates the cardinal rule of the Time Lords by helping the colonists who were injured by the meteorite bombardment and by providing medical assistance.

Needing better light in the medical facility, the Doctor sends Tegan and Turlough to fetch a portable mu-field activator and five argon discharge globes from the TARDIS. However, once they arrive, they find that the ship’s inner door is stuck, preventing them from getting beyond the console room. Norna, Tegan and Turlough obtain an acid-battery from the research room to power the lights. On their way back, however, they are forced to knock the Warnsman unconscious to avoid capture. Another bombardment occurs and, in the Warnsman’s absence, catches the colony unawares. When the skies clear, the TARDIS has gone and all that is left is the Doctor’s hat stand.

Plantaganet orders the execution of the Doctor, but Turlough intercedes, using a surviving hat stand from the TARDIS as a weapon. Plantaganet tries to attack the Doctor with a crowbar but suffers a heart attack. The Time Lord manages to save his life using the battery, but he is later dragged into the ground by some mysterious force.

The Doctor, Tegan and Turlough discover that the culprits are the Gravis and his Tractators, giant insects with incredible powers over gravity. The disappearing colonists where being used by the Tractators because they need human minds and bodies to run their mining machines. Plantaganet was kidnapped to replace Captain Revere, the current driver whose is now brain dead. The Gravis intends to transform Frontios into an enormous spaceship; once successful, he would be able to spread the terror of the Tractators across the galaxy. The Doctor, Turlough, Brazen and his guards rescue Plantaganet by knocking out the Gravis. However, Brazen gets caught by one of the mining machines and is killed while the others escape.

Tegan wanders around in the tunnels and comes across bits of the TARDIS’s inner walls. She is chased by the Gravis, who has now regained consciousness, and two of his Tractators. She inadvertently comes upon one of the TARDIS’s inner doors and she opens it to find herself in the TARDIS console room, which has bits of rock wall mixed in with its normal walls. She also finds the Doctor, Turlough and Plantaganet hovering around the console. The Doctor ushers the Gravis in and then tricks him into reassembling the TARDIS by using his power over gravity. The Gravis pulls the TARDIS back into its normal dimension. Once fully assembled, the Gravis is effectively cut off from his fellow Tractators, which revert to a harmless state.

The Doctor and Tegan drop the Gravis off on the uninhabited planet of Kolkokron. Returning to Frontios, the Doctor gives Plantaganet the hat stand as a farewell token and asks that his own involvement in the affair not be mentioned to anyone especially the Time Lords. Once the TARDIS has left Frontios, its engines start making a worrying noise. The Doctor appears to be helpless as the ship is being pulled towards the centre of the universe.

Cast
Doctor Peter Davison (Fifth Doctor)
Companions Janet Fielding (Tegan Jovanka)
Mark Strickson (Vislor Turlough)
Guest stars
Jeff Rawle — Plantagenet
Peter Gilmore — Brazen
Lesley Dunlop — Norna
William Lucas — Range
Maurice O’Connell — Cockerill
Raymond Murtagh — Retrograde
Richard Ashley — Orderly
Alison Skilbeck — Deputy
John Gillett — The Gravis
William Bowen, George Campbell, Hedi Khursandi, Michael Malcolm, Stephen Speed — Tractators

Production
Writer Christopher H. Bidmead
Director Ron Jones
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6N
Series Season 21
Length 4 episodes, 25 minutes each
Originally broadcast January 26–February 3, 1984

source: wikipedia

Series 21: The Awakening

On July 13, 1643, two forces came to the village of Little Hodcombe during the English Civil War and destroyed each other. As the story begins, a group of Roundheads are riding horses in the village of Little Hodcombe, with little regard to the villagers around them. The only problem is that it is not 1643, it is 1984.

A schoolteacher, Jane Hampden, is convinced that her fellow villagers, led by the town’s leader, Sir George Hutchinson, have taken their reenactment of a series of war games too far. Hutchinson attempts to assure her that the games are a harmless event which are merely to celebrate the English Civil War. When Hampden asks him to stop the games, Hutchinson blows her off.

Inside the TARDIS, the Doctor promises to take his companion, Tegan to 1984, so she could spend some time with her grandfather, Andrew Verney. The Doctor sets the coordinates to Little Hodcombe, where Verney resides. However, the TARDIS experiences some turbulence and arrives in what appears to be a structurally unstable church. The Doctor, Tegan and Turlough, while watching on the scanner, sees a man in 17th Century clothing, fleeing from the church and the Doctor dashes out to help him. However, the man has now vanished. Tegan is convinced that they have landed in the wrong time zone. However, Turlough tells her that he had checked the TARDIS’ coordinates and they were in the correct time zone, 1984. As the Time Lord and his companions continue pursue the man, smoke starts to billow from a crack in the wall. Eventually, the three travellers are then captured by Captain Joseph Willow and taken to Sir George Hutchinson.

The Doctor and his companions are first brought before Hampden and Colonel Ben Woolsey, who apologizes for the poor treatment that they received. Hutchinson arrives and explains to the doctor why everyone is dressed in 1643 apparel. He tells the Time Lord that the town is celebrating the anniversary of the Battle of Little Hodcombe and then he urges the Doctor to join the celebration. The Doctor says “You know, I would love to, after I find Tegan’s grandfather.” Willow asks who her grandfather is. Tegan then explains that they have come to this village to see her grandfather, Andrew Verney. She is informed that her grandfather is missing, and runs outside the room, upset. The Doctor follows but loses her. Tegan, still upset, is crying when someone steals her purse. She tries to get it back and she runs into a barn where she finds the ghost of an old man.

The Doctor returns to the church and meets a 17th Century peasant, Will Chandler, who emerges from a wall. He has been hidden in a priest hole and believes the year to be 1643. Turlough eventually rescues Tegan from the barn and they return to the TARDIS, where they see a sparkly projection on one of the walls. Meanwhile, the Doctor and Will investigate the church. Tegan and Turlough leave the TARDIS and they are re-captured. Turlough is locked in a building with Verney. Willow gives Tegan a 17th Century dress and he forces her to change into the costume. He informs her that she is to become the Queen of the May.

The Doctor and Will continue to investigate. Eventually they find a secret passage back to Ben Woolsey’s living room under a slab marked with a picture of a creature that Will identifies as the Malus. Coming the other way through the passage, the Doctor and Will meet up with Hampden, who found the passage’s other end by accident after being locked in Colonel Wolsey's office. They avoid Hutchinson, who has followed Jane down the passage, and the Doctor finds a small ball of metal. The Doctor identifies the metal as “tinclavic,” a metal “mined by the Terileptils on the planet Raaga for the almost exclusive use of the people of Hakol,” a planet in the “star system Rifta,” where “psychic energy is a force to be harnessed.”

Returning to the church, the Doctor and Hampden are astonished when a massive alien face pushes its way through the crack on the wall, roaring and spewing smoke. They manage to escape from the psychic projection of a cavalier, and head back to the house via the tunnel. The Doctor realises that the Malus in the church was discovered by Verney and Hutchinson. The latter tried to exploit the creature, but instead, the creature began to use him by organizing the war games. He deduces that the psychic energy released by the war games has fed the Malus. The Doctor and Jane again try to persuade Hutchinson to stop the games, as the final battle will be for real. He refuses and accuses the Doctor of speaking "Treason." The Doctor replies by saying "Fluently! Stop the games!" Hutchinson orders Woolsey to kill the Doctor and he leaves the room. However, once Hutchinson leaves, Woolsey joins forces with the Doctor.

The Queen of the May is taken in a horse-drawn cart towards the village green, where she is to be burned. When the cart arrives, Hutchinson suddenly noticed that the Queen is not Tegan, but a straw dummy that has been put in her place by Woolsey. Hutchinson becomes angry and he orders his men to kill Woolsey and the others. Will appears in the nick of time and uses a flame torch to cause a distraction which allows the Doctor, Hampden, Woolsey and Tegan to escape and get back to the TARDIS. The Doctor locks the signal conversion unit on the frequency of the psychic energy feeding the Malus, hoping to be able to direct it. Willow and a trooper try in vain to break their way into the TARDIS, and Turlough and Verney knock them unconscious with lumps of masonry. The Doctor succeeds in blocking the energy, and the projection of the Malus in the TARDIS dies. The real Malus, in an act of desperation, attempts to drain as much psychic energy from the villagers as possible. He creates a corporeal projection of three roundheads who try to kill the Doctor, Woolsey, Tegan, Turlough, Hampden, Verney and Will. However, when they were about to strike, the dazed and confused trooper stumbles from the TARDIS and into the main church area where the three roundheads are. The trooper becomes surrounded by them and they raise their swords and they decapitate him and then vanish.

Hutchinson arrives and holds them all at gunpoint. When the Doctor tries to talk Hutchinson out of the thrall of the Malus, Willow attacks the group. In the scuffle, Will pushes Hutchinson into the mouth of the Malus, destroying the Malus's medium. Realizing it has failed, the Malus prepares to destroy itself and everything around it. Subsequently the church begins to collapse and the Doctor leads the others, including Willow, to safety in the TARDIS.

Inside the TARDIS, the Doctor's companions are surprised to see Will still among them. The Doctor explains that he must have been wrong in his assumption that Will was a psychic projection. He then says that the Malus must have created a temporal rift which allowed Will to slip into the future. The Time Lord then says that he will take Will back to 1643. Tegan objects and ask the Doctor to allow her some time to visit her grandfather. The Doctor is initially disgruntled but he is persuaded to stay in Little Hodcombe for a while for a rest. Turlough mentions that the stay would give him a chance to drink some tea. Will asks what "tea" is. The Doctor explains the organical make up of tea to him. Will is convinced that it is a "wicked brew." The Doctor acknowledges the fact, but he indicates that he likes it anyway.

Cast
Doctor Peter Davison (Fifth Doctor)
Companions Janet Fielding (Tegan Jovanka)
Mark Strickson (Vislor Turlough)
Guest stars
Polly James — Jane Hampden
Denis Lill — Sir George Hutchinson
Glyn Houston — Colonel Ben Wolsey
Jack Galloway — Joseph Willow
Keith Jayne — Will Chandler
Frederick Hall — Andrew Verney
Christopher Saul — Trooper

Production
Writer Eric Pringle
Director Michael Owen Morris
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6M
Series Season 21
Length 2 episodes, 25 minutes each
Originally broadcast January 19–January 20, 1984

source: wikipedia

Series 21: Warriors of the Deep

The year is 2084, and there is a cold war in progress. The world is divided into two opposing super power blocs. One of the blocs have created a secret underwater base, Sea Base 4, which is strategically positioned and has nuclear weapons aimed at the opposing bloc. As a security measure, the Seabase nuclear weapons can not be activated, unless a trained human operator can "sync" his/her mind with the computer and authorize their deployment.

The base's crew is led by Commander Vorshak and his senior officers, Nilson, Bulic, Security Chief Preston, and Lt. Michaels, the base's sync operator. Lt. Michaels is mysteriously killed before the start of the story, and as a result, his inexperienced apprentice, Ensign Maddox, is forced to assume Michaels' official responsibilities. The story begins on the bridge of Sea Base 4. Vorshak and Bulic noticed something strange on their long range sensors, but dismiss it as being a trivial glitch. In reality, the glitch is a Silurian battleship led by Icthar, the sole survivor of the Silurian Triad and his subordinates, Tarpok and Scibus, who are monitoring Sea Base 4.

Inside the TARDIS, Turlough has changed his mind about going home, and the Doctor plans to show Tegan something of Earth’s future. As the TARDIS materialises in space, it is attacked by Sentinel Six, a robot weapons system. In a blink of an eye, the Doctor manages to save the TARDIS by materializing on to Sea Base 4.

Sea Base 4 under goes a practice missile run, but Maddox, the temporary sync operator, is uncertain of his skill at the job. When Maddox faints after the practice run, Vorshak begins to realize that the function of the base will continue to be compromised until either Maddox lives up to his duties or a replacement is assigned. Nilson and the Base’s chief medical officer, Doctor Solow (played by Ingrid Pitt),who are enemy agents for the opposing bloc, plan to program Maddox to destroy the computer circuitry. To do this they ask Vorshak to release Maddox’s duplicate program disk under the pretext of helping the sync operator cope with his job. Vorshak does so, and Maddox is programmed in the Base’s psycho-surgery unit.

The Doctor’s presence on the Sea Base is detected when Turlough summons a lift. The Time Lord programs the base’s reactor to overload in an attempt to avoid capture. This fails, however, and the time travellers are all taken prisoner. Preston also finds the TARDIS.

The Silurians revive the Sea Devil warriors of Elite Group One and their brilliant commander, Sauvix. The Silurians and Sea Devils launch an attack on the base and the Doctor, recognising their ship on the monitor screen, tries to warn Vorshak not to fire on them. Vorshak ignores him, and, as a result, the Base’s defences are neutralised by the Silurians' deflection beam. The Silurians then dispatch the Myrka, a large marine monster, who attacks Airlock 1, and the Sea Devils, who assault Airlock 5 of the sea base.

During the attacks, Solow and Nilson activate Maddox, who tampers with the equipment. When Ensign Karina becomes suspicious Nilson makes Maddox kill her.

The Myrka forces its way into the base, temporarily trapping the Doctor and Tegan until Turlough gets the inner airlock door opened to save them. The creature starts making its way towards the bridge, killing people by electrocution. Doctor Solow become one of the Myrka's victim when she foolishly tries to engage the creature in combat while she was on her way to an escape pod. The Doctor eventually destroys the Myrka by using an ultra-violet light generator.

The Silurians prime up a device called the manipulator and prepare to arrive on the base. The Sea Devils break through Airlock 5 and start the push for the bridge, killing any crew that stand in their way. Solow's accomplice, Nilson, is revealed as a traitor and he attempts to escape by taking Tegan hostage. The Doctor blinds him with the ultra-violet device, and a group of Sea Devils appear and kill him. The Doctor and Tegan are taken as prisoners to the bridge, which is now under the control of the Silurians.

The Doctor recognizes Icthar and confronts him about the massacre of the crew of Sea Base 4. Icthar reveals his group intends to get mankind to destroy itself by triggering a global war. They undo the damage caused by Maddox’s sabotage and connect the manipulator to the systems.

The Doctor escapes from the bridge and tries to find something to use against the reptiles. He discovers some cylinders of hexachromite gas, which is lethal to all reptile life. A Sea Devil discovers the Doctor's presence and attempts to shoot him. He misses the Doctor and hits one of the gas containers which sprays all over the warrior. As a result, the warrior begins to dissolve. Preston urges the Doctor to use the gas on all of the Silurians and Sea Devils. The Doctor adamantly refuses and accuses Preston of advocating genocide. The Doctor changes his mind when Turlough reminds him of what the Silurians intend to do if they launch the missiles, and when he is unable to find anything else harmful but less lethal - so begins to connect the gas containers to a central air pump. The Doctor is discovered by Sauvix before he can turn the pump on. Preston grabs a gun, but is killed by Sauvix before he is sprayed with gas and killed by Bulic. As the Silurians prepare to fire the missiles, the Doctor feeds the gas into the ventilation system. Bulic stays in the chemical store to ensure that the gas keeps flowing, while the Doctor and his companions leave for the bridge to try to stop the Silurians.

The warriors begin to collapse from the gas and the Doctor tells Tegan and Turlough to give the Silurians oxygen to keep them alive. The Doctor, who is aided by Vorshak, tries to stop the missiles by linking himself into the equipment as the sync operator. The Doctor succeeds, but Vorshak is killed by Icthar. Then Itchar, himself, is killed by Turlough. Then it is all over. The Doctor, his companions, and Bulic are the only survivors. The Doctor is left in despair and he simply says, "There should have been another way."

Cast
Doctor Peter Davison (Fifth Doctor)
Companions Janet Fielding (Tegan Jovanka)
Mark Strickson (Vislor Turlough)
Guest stars
Tom Adams — Vorshak
Ian McCulloch — Nilson
Ingrid Pitt — Solow
Nigel Humphreys — Bulic
Tara Ward — Preston
Martin Neil — Maddox
Nitza Saul — Karina
James Coombes — Paroli
Norman Comer — Ichtar
Stuart Blake — Scibus
Vincent Brimble — Tarpok
Christopher Farries — Sauvix

Production
Writer Johnny Byrne
Director Pennant Roberts
Script editor Eric Saward
Producer John Nathan-Turner
Executive producer(s) None
Production code 6L
Series Season 21
Length 4 episodes, 25 minutes each
Originally broadcast January 5–January 13, 1984

source: wikipedia