Doctor Who
S16:E3 The Ribos Operation: Part 3
The Doctor, Romana and K9 are caught between deadly weapons and savage beasts.
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The Doctor and Romana set out to collect the six segments of the "Key to Time." Their first stop: Ribos, a planet where the inhabitants have reached a Middle Ages stage of development.
S16:E1 • Sep 2, 1978 • 25m
The Doctor finds the first segment, but he and Romana are threatened by trickery.
S16:E2 • Sep 9, 1978 • 25m
The Doctor, Romana and K9 are caught between deadly weapons and savage beasts.
S16:E3 • Sep 16, 1978 • 25m
The Doctor and Romana are trapped in the catacombs, hunted by both Vynda-K's men and the Ribans.
S16:E4 • Sep 23, 1978 • 25m
The Doctor and his companions land on the planet Calufrax, but they discover another planet, Zanak, is in its place.
S16:E5 • Sep 30, 1978 • 25m
The Doctor's efforts to rescue Romana lead him to a startling discovery.
S16:E6 • Oct 7, 1978 • 26m
The Doctor enlists the aid of the powerful Mentiads in attacking the Captain.
S16:E7 • Oct 14, 1978 • 26m
The Doctor's only hope in vanquishing the Captain and Queen Xanxia involves risking the destruction of the Tardis.
S16:E8 • Oct 21, 1978 • 25m
The Doctor and Romana encounter strange monsters as they explore the connection between the stone circle and the missing Key segment.
S16:E10 • Nov 4, 1978 • 24m
The Doctor unmasks the villain, but he and Romana may be trapped forever in another dimension.
S16:E11 • Nov 11, 1978 • 24m
The Doctor's only hope is to turn the adversity at hand to his advantage.
S16:E12 • Nov 18, 1978 • 23m
The Doctor becomes involved in identity problems while trying to get away with the fourth segment of the Key to Time.
S16:E13 • Nov 25, 1978 • 25m
The evil Count Grendel holds Romana, the Princess and the Prince hostage as part of his plan to usurp the throne of Tara.
S16:E14 • Dec 2, 1978 • 24m
The Doctor and Grendel engage in a duel of wits with a kingdom hanging in the balance.
S16:E15 • Dec 9, 1978 • 24m
Only a last-minute rescue can save Romana, the fourth segment and the kingdom from Grendel's infamy.
S16:E16 • Dec 16, 1978 • 25m
The hunt for the fifth segment of the Key to Time embroils the Doctor in gunrunning with primitive swamp dwellers.
S16:E17 • Dec 23, 1978 • 23m
The Doctor and his companions are caught between Swampies and technicians as the monster Kroll awakes.
S16:E18 • Dec 30, 1978 • 24m
The Swampies decide that Kroll must be appeased with human sacrifice, and guess who they select as the victims.
S16:E19 • Jan 6, 1979 • 22m
Kroll embarks on a rampage and Thrawn's efforts to defeat the monster only make things worse.
S16:E20 • Jan 13, 1979 • 22m
The Doctor begins a perilous mission to save all humankind from destruction.
S16:E21 • Jan 20, 1979 • 25m
The Doctor and his companions are trapped on Zeos, which has been programmed to self-destruct.
S16:E22 • Jan 27, 1979 • 24m
The Doctor discovers the bizarre truth about the Zeons.
S16:E23 • Feb 3, 1979 • 25m
Armageddon approaches as nothing seems to stand in the way of the Shadow's dark purpose.
S16:E24 • Feb 10, 1979 • 25m
The truth about the sixth segment is discovered, but Armageddon is only seconds away.
S16:E26 • Feb 24, 1979 • 25m