Seasons & episodes
S18 · E12Full Circle (4) 1980-11-15 · 25 min
Marshmen invade the Terradonian ship thanks to Romana, who seems to be in communion with them. While the ship's inhabitants flee for their lives, the Doctor discovers a crucial fact why these humanoids can never return to the planet Terradon.
S18 · E13State of Decay (1) 1980-11-22 · 23 min
Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world...?
S18 · E14State of Decay (2) 1980-11-29 · 24 min
The Doctor and Romana are escorted to the tower to meet the royal leaders, hoping they can find answers to why this society evolves backwards. The Doctor recognizes the tower as an old Earth spaceship, and further finds that the old fuel tanks, far from empty, are full - but with blood. Meanwhile, Councilor Aukon senses intelligence in Adric and selects him to be the their first "Chosen One."
S18 · E15State of Decay (3) 1980-12-06 · 25 min
The Doctor finds archive material in the TARDIS that tells him he's dealing with an ancient enemy of the Time Lords, a nearly indestructible king vampire who's ready to revive and reenter normal space, spreading death, once again, across the universe.
S18 · E16State of Decay (4) 1980-12-13 · 25 min
The Doctor joins the villagers' revolt against their vampire rulers, unsure how to kill the king vampire. Meanwhile Adric is first in line to join the new vampire order while Romana is laid out as a sacrificial Time Lord for the awakening king vampire and his swarm of bats.
S18 · E17Warriors' Gate (1) 1981-01-03 · 23 min
The TARDIS is drawn into an empty white void, somewhere between universes. But they are not the only ones trapped there.
S18 · E18Warriors' Gate (2) 1981-01-10 · 24 min
When Rorvik learns that Romana is a time sensitive, he takes her prisoner, forcing her to find a way out of the void. The Doctor attempts to discover what lies beyond the mirror.
S18 · E19Warriors' Gate (3) 1981-01-17 · 23 min
While Biroc leads the Doctor to a view of the Tharil's lordly past, Romana learns more about the damaged freighter and the cold-heartedness of its crew. Meanwhile Commander Rorvik, confounded by the time mirror inside the universal center gateway, ignores evidence that it's no simple mirror and decides to blast it, imperiling the lives of everyone.
S18 · E20Warriors' Gate (4) 1981-01-24 · 25 min
The Doctor deduces that the freighter is a slave ship loaded up with Tharils to be sold as time machine components, but the immense weight of Rorvik's damaged ship, designed to contain the Tharils, is now collapsing the fragile void of the micro-universe in which they're all stuck, pulling everything inside ever closer.
S18 · E21The Keeper of Traken (1) 1981-01-31 · 25 min
The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?
S18 · E22The Keeper of Traken (2) 1981-02-07 · 25 min
Tremas claims consular privilege to protect the Doctor and Adric from execution, though it binds his fate to theirs if they're found guilty of murder. Melkur strengthens his hold over Kassia while Seron decides to have rapport with The Keeper to learn truth, and Adric finds evidence of another TARDIS in the area.
S18 · E23The Keeper of Traken (3) 1981-02-14 · 24 min
With Tremas falling under suspicion, due to his association with the Doctor, a new Keeper Nominate is named. Now, with everything in place, Melkur has only a short wait before his full malevolence can unfold.
S18 · E24The Keeper of Traken (4) 1981-02-21 · 26 min
With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.
S18 · E25Logopolis (1) 1981-02-28 · 25 min
Deciding to repair the TARDIS' chameleon circuit, the Doctor goes to Earth to find a real police box. But an old enemy is one step ahead of him.
S18 · E26Logopolis (2) 1981-03-07 · 25 min
The Doctor, aware that his time may soon be ending, travels to the Logopolis where a series of fateful events are set in motion.
S18 · E27Logopolis (3) 1981-03-14 · 25 min
With Nyssa from Traken unexpectedly rejoining the group, Adric aids the Monitor of Logopolis in trying to save the Doctor before time runs out. The Master, at liberty to prepare, is finally ready to reveal his true target, which unknowingly sets off the biggest catastrophe of all time.
S18 · E28Logopolis (4) 1981-03-21 · 26 min
With the universe collapsing, the Doctor forms an uneasy alliance with the Master to save it. In case all does not go well, the Watcher takes the Doctor's companions to a safe place, but his plans for them don't stop there. The one hope for all lies back on Earth.
S19 · E1Castrovalva (1) 1982-01-04 · 25 min
Southern England, 1981. The universe has been saved, but at the cost of the fourth Doctor's life. The newly-regenerated fifth Doctor must rely on his friends to survive as the regeneration threatens to fail…
S19 · E2Castrovalva (2) 1982-01-05 · 25 min
The TARDIS is plunging toward destruction. But even if the Doctor can escape, is yet another trap waiting?
S19 · E3Castrovalva (3) 1982-01-11 · 24 min
The Doctor has arrived in the supposed safety of Castrovalva. But something is odd about the seemingly tranquil city…
S19 · E4Castrovalva (4) 1982-01-12 · 25 min
The TARDIS crew are caught in a space-time trap. Escaping will mean a final confrontation with the Master.
S19 · E5Four to Doomsday (1) 1982-01-18 · 24 min
Deep space, four days from Earth, 1981. The TARDIS materialises aboard a massive Urbankan starship. What is the real agenda of Monarch, master of the vessel?
S19 · E6Four to Doomsday (2) 1982-01-19 · 25 min
The Doctor and his companions explore Monarch's vessel. But what is the secret of the ancient Earthlings aboard?
S19 · E7Four to Doomsday (3) 1982-01-25 · 25 min
Bigon reveals Monarch's terrible plan to the Doctor. Can he act in time to save Nyssa? And which side is Adric on?