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The Ribos Operation (4)

September 23, 1978

60.0%

Doctor Who - S16 - E4

Trapped in the catacombs between a mad warlord and ravenous monsters, the Doctor and Romana work desperately to obtain the segment of the Key to Time - and escape alive.

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Doctor Who: Season 16 - 26 Episode s

16x1 - The Ribos Operation (1)
September 2, 1978
The Magellanic Clouds, the planet Ribos, an unknown time. Ordered by the White Guardian to collect the pieces of the omnipotent Key to Time, The Doctor, K-9 and his new assistant Romana arrive. Collecting the first segment is not going to be easy…
16x2 - The Ribos Operation (2)
September 9, 1978
Trying to obtain the first segment of the Key to Time, the Doctor and Romana are swept up in an elaborate con. The target – the homicidal Graff Vynda K.
16x3 - The Ribos Operation (3)
September 16, 1978
Prisoners of the maniacal Graff Vynda K, the Doctor and Romana must break out and pursue the first segment – even as Unstoff takes it into the most dangerous place on Ribos.
16x4 - The Ribos Operation (4)
September 23, 1978
Trapped in the catacombs between a mad warlord and ravenous monsters, the Doctor and Romana work desperately to obtain the segment of the Key to Time - and escape alive.
16x5 - The Pirate Planet (1)
September 30, 1978
Planet Zanak, unknown time. The Doctor and Romana are seeking the planet Calufrax where the second segment waits. They are in the right place and the right time… but on the wrong planet.
16x6 - The Pirate Planet (2)
October 7, 1978
The Doctor begins to investigate the mysteriously wealthy planet Zanak. Mentiads, a deranged Captain, strange omens, miraculous mines – what does it all mean? And what does it have to do with the Key to Time?
16x7 - The Pirate Planet (3)
October 14, 1978
The Mentiads take the Doctor, Romana and Kimus to a reunion with K9 and Mula, where they set about trying to defeat the Captain.
16x8 - The Pirate Planet (4)
October 21, 1978
The Captain and Xanxia work toward their secret goals. Both depends on the pirate planet consuming one more victim - Earth.
16x9 - The Stones of Blood (1)
October 28, 1978
England, the late 1970s. The Doctor and Romana arrive in search of the third segment. But the Tracer readings are erratic and something ominous is happening with an ancient stone circle...
16x10 - The Stones of Blood (2)
November 4, 1978
The quest for the Third Segment has landed the Doctor and Romana in the midst of a druidic cult centred on a stone circle. But the stones are not what they seem, and somewhere out there is a blood-thirsty Celtic goddess.
16x11 - The Stones of Blood (3)
November 11, 1978
Chased by blood-thirsty stones, the Doctor must find a way to rescue Romana. What awaits him in the theoretical absurdity of hyperspace?
16x12 - The Stones of Blood (4)
November 18, 1978
Facing a sentence of death from merciless justice machines, the Doctor must play for time while Romana tries to discover just who Vivian Fey really is.
16x13 - The Androids of Tara (1)
November 25, 1978
Arriving on Tara, Romana locates the fourth segment of the Key to Time with ease. But getting it away proves more difficult, as she is captured by the scheming Count Grendel who wants the throne of Tara for himself.
16x14 - The Androids of Tara (2)
December 2, 1978
The Doctor must employ a desperate gambit to keep the evil Grendel off the throne. And the Count has a new pawn to play - Romana.
16x15 - The Androids of Tara (3)
December 9, 1978
The battle for control of Tara turns into a duel of wits between the Doctor and Grendel. But the Count shows he has more treacherous tricks up his sleeve.
16x16 - The Androids of Tara (4)
December 16, 1978
Grendel plans two weddings and a funeral to cement his hold over Tara. The Doctor and K-9 race to foil him and save the Time Lady's life.
16x17 - The Power of Kroll (1)
December 23, 1978
The Third Moon of Delta Magna, The Future. The Doctor and Romana arrive in search of the fifth segment and are immediately swept up in a conflict between the crew of a new refinery and the embittered natives…
16x18 - The Power of Kroll (2)
December 30, 1978
The Doctor and Romana try to avoid being sacrificed to Kroll – just in time for the real monster to appear.
16x19 - The Power of Kroll (3)
January 6, 1979
The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it – by sacrificing the Doctor and Romana.
16x20 - The Power of Kroll (4)
January 13, 1979
The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander. And there is no sign of the fifth segment of the Key to Time.
16x21 - The Armageddon Factor (1)
January 20, 1979
Searching for the sixth segment, the Doctor and Romana land in the midst of a brutal nuclear war between the planets Atrios and Zeos.
16x22 - The Armageddon Factor (2)
January 27, 1979
Swept up in an apocalyptic war, the Doctor must help the Marshal defend his planet. But who or what controls the Marshal?
16x23 - The Armageddon Factor (3)
February 3, 1979
The Doctor meets a new enemy – the Shadow – who wants the Key to Time. And the Atrian-Zeon war is approaching an awful climax.
16x24 - The Armageddon Factor (4)
February 10, 1979
The Doctor is forced into a desperate gambit to prevent a massacre. But it is getting harder to tell friend from foe.
16x25 - The Armageddon Factor (5)
February 17, 1979
The Doctor and Romana finally venture into the Shadow's lair. The Shadow appears to hold all the cards but the Doctor has found an old friend.
16x26 - The Armageddon Factor (6)
February 24, 1979
The Doctor and the Shadow have their final confrontation to take control of the Key to Time. Completing it may entail an awful sacrifice. And the Black Guardian will do anything to obtain it and plunge the Universe into chaos.

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16x1 - The Ribos Operation (1)

16x2 - The Ribos Operation (2)

16x3 - The Ribos Operation (3)

16x4 - The Ribos Operation (4)

16x5 - The Pirate Planet (1)

16x6 - The Pirate Planet (2)

16x7 - The Pirate Planet (3)

16x8 - The Pirate Planet (4)

16x9 - The Stones of Blood (1)

16x10 - The Stones of Blood (2)

16x11 - The Stones of Blood (3)

16x12 - The Stones of Blood (4)

16x13 - The Androids of Tara (1)

16x14 - The Androids of Tara (2)

16x15 - The Androids of Tara (3)

16x16 - The Androids of Tara (4)

16x17 - The Power of Kroll (1)

16x18 - The Power of Kroll (2)

16x19 - The Power of Kroll (3)

16x20 - The Power of Kroll (4)

16x21 - The Armageddon Factor (1)

16x22 - The Armageddon Factor (2)

16x23 - The Armageddon Factor (3)

16x24 - The Armageddon Factor (4)

16x25 - The Armageddon Factor (5)

16x26 - The Armageddon Factor (6)

S0: Specials

S1: Season 1

S2: Season 2

S3: Season 3

S4: Season 4

S5: Season 5

S6: Season 6

S7: Season 7

S8: Season 8

S9: Season 9

S10: Season 10

S11: Season 11

S12: Season 12

S13: Season 13

S14: Season 14

S15: Season 15

S16: The Key to Time

S17: Season 17

S18: Season 18

S19: Season 19

S20: Season 20

S21: Season 21

S22: Season 22

S23: The Trial of a Time Lord

S24: Season 24

S25: Season 25

S26: Season 26