| 105
| City of Death
| David Agnew (pseudonym for Graham Williams & Douglas Adams: based on an idea by David Fisher)
| - 24:26
- 24:33
- 25:26
- 25:10
- 29 September 1979
- 06 October 1979
- 13 October 1979
- 20 October 1979
| Michael Hayes
|
| 106
| The Creature from the Pit
| David Fisher
| - 23:35
- 24:57
- 23:37
- 24:10
- 27 October 1979
- 03 November 1979
- 10 November 1979
- 17 November 1979
| Christopher Barry
|
| 107
| The Nightmare of Eden
| Bob Baker
| - 24:18
- 22:46
- 24:06
- 24:32
- 24 November 1979
- 01 December 1979
- 08 December 1979
- 15 December 1979
| Alan Bromly
|
| 108
| The Horns of Nimon
| Anthony Read
| - 25:43
- 25:02
- 23:27
- 26:45
- 22 December 1979
- 29 December 1979
- 05 January 1980
- 12 January 1980
| Kenny McBain
|
| -
| Shada
| Douglas Adams
| Filmed Footage
- -
- -
- -
- -
- -
- -
| UNBROADCAST
| Pennant Roberts
|
| Season 18: 1980 to 1981
|
| 109
| The Leisure Hive
| David Fisher
| - 23:35
- 20:47
- 21:22
- 21:18
- 30 August 1980
- 06 September 1980
- 13 September 1980
- 20 September 1980
| Lovett Bickford
|
| 110
| Meglos
| John Flanagan & Andrew McCulloch
|
|
|
|
|
|
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|
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