S16 E1 • The Ribos Operation (1)

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…

Première diffusion : 2 septembre 1978

S16 E2 • The Ribos Operation (2)

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.

Première diffusion : 9 septembre 1978

S16 E3 • The Ribos Operation (3)

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.

Première diffusion : 16 septembre 1978

S16 E4 • The Ribos Operation (4)

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

Première diffusion : 23 septembre 1978

S16 E5 • The Pirate Planet (1)

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.

Première diffusion : 30 septembre 1978

S16 E6 • The Pirate Planet (2)

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?

Première diffusion : 7 octobre 1978

S16 E7 • The Pirate Planet (3)

The Doctor and Romana begin to uncover the secrets of Zanak. But the murderous Captain seems to have plans of his own.

Première diffusion : 14 octobre 1978

S16 E8 • The Pirate Planet (4)

The Captain and Xanxia work toward their secret goals. Both depends on the pirate planet consuming one more victim - Earth.

Première diffusion : 21 octobre 1978

S16 E9 • The Stones of Blood (1)

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...

Première diffusion : 28 octobre 1978

S16 E10 • The Stones of Blood (2)

The quest for the Third Segment has landed the Doctor and Romana in the midst of a druidic cult centered on a stone circle. But the stones are not what they seem. And somewhere out there is a blood-thirsty celtic godess.

Première diffusion : 4 novembre 1978

S16 E11 • The Stones of Blood (3)

Chase by blood-thirsty stones, the Doctor must find a way to rescue Romana. What awaits him in the theoretical absurdity of hyperspace?

Première diffusion : 11 novembre 1978

S16 E12 • The Stones of Blood (4)

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.

Première diffusion : 18 novembre 1978

S16 E13 • The Androids of Tara (1)

Arriving on the techno-Ruritanian world of Tara, Romana easily obtains the Fourth Segment. Getting off the planet, however, isn't going to be quite so easy...

Première diffusion : 25 novembre 1978

S16 E14 • The Androids of Tara (2)

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.

Première diffusion : 2 décembre 1978

S16 E15 • The Androids of Tara (3)

The Doctor and Romana are swept up in the political machinations of Tara. The Doctor must keep the android "king" running while Grendel plots to use Romana to destroy him.

Première diffusion : 9 décembre 1978

S16 E16 • The Androids of Tara (4)

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.

Première diffusion : 16 décembre 1978

S16 E17 • The Power of Kroll (1)

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…

Première diffusion : 23 décembre 1978

S16 E18 • The Power of Kroll (2)

The Doctor and Romana try to avoid being sacrificed to Kroll – just in time for the real monster to appear.

Première diffusion : 30 décembre 1978

S16 E19 • The Power of Kroll (3)

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.

Première diffusion : 6 janvier 1979

S16 E21 • The Armageddon Factor (1)

Searching for the sixth segment, the Doctor and Romana land in the midst of a brutal nuclear wear between the planets Atrios and Zeos.

Première diffusion : 20 janvier 1979

S16 E20 • The Power of Kroll (4)

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.

Première diffusion : 13 janvier 1979

S16 E22 • The Armageddon Factor (2)

Swept up in an apocalyptic war, the Doctor must help the Marshall defend his planet. But who or what controls the Marshall?

Première diffusion : 27 janvier 1979

S16 E23 • The Armageddon Factor (3)

The Doctor meets a new enemy – the Shadow – who wants the Key to Time. And the Atrian-Zeon war is approaching an awful climax.

Première diffusion : 3 février 1979

S16 E24 • The Armageddon Factor (4)

The Doctor is forced into a desperate gambit to prevent a massacre. But it is getting harder to tell friend from foe.

Première diffusion : 10 février 1979

S16 E25 • The Armageddon Factor (5)

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.

Première diffusion : 17 février 1979

S16 E26 • The Armageddon Factor (6)

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.

Première diffusion : 24 février 1979