Dr. Who (The Early Years) - Part 56 "Terminus"

Turlough is still working with the Black Guardian to kill the Doctor, though at this point reluctantly. He's discovered the Doctor is only evil to the Black Guardia. Because of this, Turlough finds it increasingly difficult to carry out his task, he's not certain he can do it. So when the Black Guardian instructs him to sabotage the Tardis, he takes this more indirect route with the Black Guardians' promise he will be 'lifted away' to safety when the Tardis breaks up.

Tegan notices the Tardis is beginning to break up so calls for the Tardis, but Nyssa is trapped in her room. As a fail-safe, the Tardis locks onto a nearby ship and opens a door into the ship so she can escape. Using the Tardis scanner, the Doctor notices the door open in her room and encourages her to go through, knowing she'll be safer where ever she than in her room which is starting to dissolve. Once safe, the Doctor concentrates on the Tardis and fixes it. He then heads to Nyssa's room to see if he can find where she went.

Meanwhile, the ship is also boarded by space pirates who are uncertain what they will find inside. They quickly run into the Doctor who has been reunited with Nyssa, when they discover to their horror they are on Terminus, a leper ship where people go to either be cured or killed. Though told to stay behind, Tegan and Turlough follow the Doctor but are quickly trapped inside the ventilation system when they hide from a sentry robot. After ducking into the shaft, a group of Lazars walk over the grate leading into the shaft, and quickly becomes stuck.

As the Doctor, Nyssa and the two pirates are exploring the ship, Nyssa becomes very hot and takes off the skirt she's wearing. She's also not feeling well and realizes she's come down with the Lazar disease. Space Pirate Olvir tells Nyssa he had a sister with Lazar and she never came back from Terminus. It's not long before Nyssa is captured and brought to the slaves running the ship. The only thing that keeps them going is Hydromel, a drug that keeps them from getting the Lazar disease. If they don't work, they no longer receive shipments of the Hydromel. They are known as the Vanir and quickly process Nyssa for the 'cure'.

As the Doctor continues his search, unaware of Nyssa's capture, he runs into Bor, one of the Vanir who tells the Doctor a second of the ships engines is going to explode, as one already has. Having already known the ship is at the center of the universe and once capable of Time Travel, he realizes the ships first engine explosion is what started 'Event One'. If a second engine blows, it'll destroy the universe. The Doctor is about to help Bor, but is then captured by another of the Vanir who thinks The Doctor and Kari are corporate spies for the company that enslaves them.

The Doctor escapes and prevents the ships engine from exploding. Meanwhile, Nyssa is doused with radiation which does cure her, but to her horror she learns the process is unrefined and typical chances of survival are hit or miss. With the Doctors aid, she convinces the Vanir they can turn Terminus into a working facility, and she can process synthetic hydromel, thus freeing them from the company. The Vanir agree to help, so Nyssa opts to stay behind to help with continual research into the Lazar cure. She's confident the cure can be refined with a vastly higher survival rate.

WHO: Nyssa

DEPARTURE LOCATION: Terminus, a ship at the center of the universe.

REASON FOR DEPARTURE: Having been cured from the Lazar disease, Nyssa decides to spend the rest of her life finding a cure for other infected Lazars.

Dr. Who (The Early Years) - Part 55 "Mawdryn Undead"

The Tardis is flying through space when suddenly Nyssa notices a ship is flying directly towards them. Though the probability is high, the Doctor takes evasive maneuvers to avert a collision and materializes the Tardis inside the ship. Stepping out of the Tardis, Tegan thinks the ship looks more like the Queen Mary, for how extravagant it is. As they continue to explore, they find no one. That's when Tegan corrects herself and now thinks the ship reminds her more of the Mary Celeste. When they try to take off again, the Tardis is stuck. There is some interference holding the Tardis in place.

Meanwhile, on Earth. Turlough is a bored school student who coaxes his friend "Hippo" into taking a vintage car for a joy-ride. Hippo is horrified when Turlough does not return immediately s he suggested he would. Turlough's cockiness soon fades as he suddenly has to veer off the road to avoid a collision. In an instant, he's hovering over his body while a sinister figure strikes up a bargain with him. Turlough's 'Black Guardian' wants him to kill the Doctor, in exchange for giving him free passage back to his home planet. Turns out, Turlough is a marooned alien and very bored with Earth. Reluctantly, Turlough agrees when he hears how evil the Doctor is.

Back on the ship, the Doctor finds the source of the interference, but he must use the ships transport pod to travel to Earth and disable it, so the Tardis can follow him. He instructs Tegan and Nyssa to stay in the Tardis and once released, it will go to Earth where they will meet up with the Doctor. The girls do as instructed but when they are on Earth and find the transport pod, they find a badly burnt figure laying on the floor. The girls immediately think something happened to the Doctor, causing him to regenerate. However, it's not long before Tegan begins to have her doubts about who this character is.

Once on Earth himself, the Doctor meets Turlough while he's trying to disable the interference. Turlough is about to smash the Doctor's head in with a rock when an explosion takes place knocking both of them back, and the rock out of Turlough's hands. However the Tardis should be free, so when it doesn't show up the Doctor is worried. Suddenly, the owner of the vehicle Turlough wrecked shows up looking for Turlough, it's none other than Brigadier Lethbridge-Stewart. The Doctor is happy to see his friend again, but the Brigadier has no idea who the Doctor is.

Fearing for the Doctors life, Tegan runs off looking for help. It's not long before she runs into a teacher who is willing to help her. Too her surprise, the teacher knows the Doctor. It's Brigadier Lethbridge-Stewart who's just retired from UNIT. He's anxious to meet the Doctor. But when they arrive at the Tardis, the person they found has continued to regenerate and despite his head, looks much better. He pilots the Tardis back to his ship, bringing along the Brigadier. However this Brigadier is from 1977, which is dangerous because the Doctor has invited the Brigadier he met from 1983 to travel back with him to the ship. Turlough accompanies the Doctor and Brigadier.

Back on the ship, the Doctor is reunited with Tegan and Nyssa and horrified to realize they each brought a Brigadier with them. To make matters worse, each has wandered off. The Doctor sends Turlough off to help keep the two Brigadier's separate. As Turlough does that, the Doctor discovers the identity of the person Nyssa thought was the Doctor. His name is Mawdryn, along with his fellow shipmates (who were hiding earlier) stole Gallifreyan technology in the hopes of becoming Timelords. The result worked to some degree, they are now cursed with perpetual regeneration for all eternity. The prospect is too much for them to bear and they wish to be released from their curse. The ask the Doctor for help.

The Doctor refuses to help Mawdryn and the rest of his crew, because to do so will require him to be hooked up to the machine and burn off the remainder of his regenerations to cure them. Mawdryn says the Doctor can only help of his own free will, so they allow him to leave. But to the Doctors horror, he finds Tegan and Nyssa have been infected by Mawdryn and if they travel in the Tardis they will either age or deage depending on which direction the Tardis travels. The only way to cure both of them is to hook them up to Mawdryn's machine also. Reluctantly the Doctor returns to sacrifice himself and cure everyone else.

With the two Brigadiers still wandering around, Turlough is doing what he can keep them separate. While doing so, he has another run in with the Black Guardian who is dissatisfied with Turlough. He once again warns Turlough of the bargain they struck, but Turlough thinks its enough to he has marooned the Doctor. He's increasingly finding it more and more difficult to want to kill the Doctor. When he tells the Black Guardian the Doctor doesn't seem evil, the Black Guardian tells him the Doctors good is his evil.

Turlough succeeds in trapping the younger Brigadier in a room as the older Brigadier now helps the Doctor set up the Mawdryn's equipment. But the Brigadier is resourceful and soon finds a way out of the room he's been trapped in. He finds the Doctor and his older self. Ignoring the Doctor's pleas to leave, he's bewildered by his older self and reaches out to touch himself. There is an explosion which takes place at the exact moment the Doctor was offering up his future regenerations. The explosion is transferred into the equipment and thus saves the Doctors future regenerations. As Mawdryn dies, he thanks the Doctor. Returning each Brigadier to their respective time zone, Turlough asks the Doctor if he can accompany him. The Doctor agrees, to the dismay of Tegan who doesn't trust him.

WHO: Vislor Turlough

PLANET OF ORIGIN: Trion, circa 1983

REASON FOR JOINING: Turlough is an alien exiled to Earth, but hates his boring life. When the Black Guardian offers him a chance to leave the planet, he hastily agrees and thus becomes involved with the Doctor. Having agreed to kill the Doctor, Turlough asks to join the Tardis crew in hopes of fulfilling his end of the agreement.

Dr. Who (The Early Years) - Part 44 "The Armageddon Factor"

The Doctor and Romana have five pieces of the Key of Time and are beginning their search for the sixth. The Doctor tries to park the Tardis in orbit around Atrios to see where their final mission will take them. Initially the Tardis has trouble finding Atrios but soon discovers it, though millions of miles where it should be. The Doctor realizes this will not be the typical mission, more may be involved than meets the eye.

The planet Atrios is at war with Zeos and on the brink of loosing the war. Princess Astra and medic Merak are romantically involved, but more importantly secretly trying to contact Zeos in hopes of ending the war. All attempts by Astra have failed and she's worried the Marshall is suspicious. Merak assures her they are still safe, or the Marshall would have done something about them trying to contact Zeos. Shortly after, the Marshall gives orders Princess Astra is to be locked away in a part of the city teaming with radiation.

The Marshall is determined to make sure he wins the war at all costs. Several times he 'meditates' in front of a mirror, much to the puzzlement of his right hand man Shapp. Shapp notices he seems to be talking to someone. Once the Doctor arrives, the Marshall blames him for the death of a guard, but when the Doctor claims to be able to help win the war, the Marshall takes a liking to the Doctor and is willing to work with him.

The Doctor tells the Marshall he'll need K-9 to help build a shield to stop the Zeons from attacking, but Shapp informs them K-9 was found and sent the furnaces to be melted down (per the Marshall's order). The Doctor runs after K-9 in hopes of saving him from being melted into slag. While doing so, Romana notices the Marshall is very agitated and mutters to himself, "the Doctor does not die.... yet."

The Doctor quickly discovers the Marshall is actually a puppet to some unknown shadow. He discovers a trans-mat which takes them, not to Zeos, but to a hidden base between both planets. On this planet is Mentalis, a computer that has been waging the war the Marshall has been fighting. K-9 talks to Mentalis and informs the Doctor if the Marshall is successful in his attack, Mentalis' fail-safe is to blow itself up, taking Atrios and Zeos with it.

While trying to figure out who this mystery shadow person is the Doctor runs into Drax, another Timelord. Drax recognizes the Doctor but calls him Theet. The Doctor is horrified to find out Drax built Mentalis, though under pain of death by the Shadow. It doesn't take long before the Doctor convinces him to switch sides and help the Doctor. Drax agrees Timelords should stick together and agrees to help. He starts off building a gun which can shrink people.

Once the gun is complete, Drax uses the gun on the Doctor and himself. The Doctor actually wanted Drax to shrink one of the Shadow's guards. Drax hadn't realized the Doctor opened his Tardis, which the gave the guard access. He went in and retrieved the first five segments of the Key to Time, claiming to know where the sixth piece was. The Doctor uses his miniature size to infiltrate the Shadow's domain (who turns out to be a servant of the Black Guardian). He reveals that Princess Astra is actually the final segment to the Key to Time. The Doctor grabs the completed Key and runs for the Tardis with Drax, Romana and K-9.

Safely in the Tardis and with Drax happily departed, the Doctor is contacted by the White Guardian who immediately tells the Doctor to release the Key to Time to him. When the Doctor asks what will happen to Astra, the White Guardian tells him she is a sacrifice for maintaining peace in the galaxy. This callous view of life makes the Doctor realize the White Guardian is really the Black Guardian in disguise. Not fooled, the Doctor disperses the Key to Time, the segments returning to their original forms, including Princess Astra. Now reunited with her lover Merak.

WHO: Romana I

DEPARTURE LOCATION: In the Tardis (Time and Location unknown)

REASON FOR DEPARTURE: It's unclear if Romana regenerates after being tortured by the Shadow, or simply wanted to change her appearance. Either way, it's not talked about on-screen and doesn't happen till the next episode.

NEXT: Return To Skaro