Numărul de episoade: 26
Sinopsis:
This season introduced K9 to the series and saw the departure of Leela. It was originally intended to include Terrance Dicks' story The Vampire Mutations but, due to a major BBC production of Dracula, it was postponed. It later became Season 18's State of Decay. To replace it, Dicks quickly scripted the season opener, Horror of Fang Rock. The season took a two week transmission break over the 1977 Christmas period, between the broadcast of part four of The Sun Makers and part one of Underworld.
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Episodul 1.Horror of Fang Rock (1)
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Episodul 2.Horror of Fang Rock (2)
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Episodul 3.Horror of Fang Rock (3)
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Episodul 4.Horror of Fang Rock (4)
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Episodul 5.The Invisible Enemy (1)
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Episodul 6.The Invisible Enemy (2)
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Episodul 7.The Invisible Enemy (3)
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Episodul 8.The Invisible Enemy (4)
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Episodul 9.Image of the Fendahl (1)
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Episodul 10.Image of the Fendahl (2)
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Episodul 11.Image of the Fendahl (3)
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Episodul 12.Image of the Fendahl (4)
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Episodul 13.The Sun Makers (1)
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Episodul 14.The Sun Makers (2)
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Episodul 15.The Sun Makers (3)
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Episodul 16.The Sun Makers (4)
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Episodul 17.Underworld (1)
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Episodul 18.Underworld (2)
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Episodul 19.Underworld (3)
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Episodul 20.Underworld (4)
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Episodul 21.The Invasion of Time (1)
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Episodul 22.The Invasion of Time (2)
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Episodul 23.The Invasion of Time (3)
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Episodul 24.The Invasion of Time (4)
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Episodul 25.The Invasion of Time (5)
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Episodul 26.The Invasion of Time (6)
Cavalerul negru 
La bloc 
Domnul si doamna Smith