Overview
The Doctor realises that Zeta Minor lies on the boundary between the universes of matter and anti-matter and something on the planet won't let the Morestrans leave.
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13 - 1Terror of the Zygons (1) August 30, 1975 -
13 - 2Terror of the Zygons (2) September 06, 1975 -
13 - 3Terror of the Zygons (3) September 13, 1975 -
13 - 4Terror of the Zygons (4) September 20, 1975 -
13 - 5Planet of Evil (1) September 27, 1975 -
13 - 6Planet of Evil (2) October 04, 1975 -
13 - 7Planet of Evil (3) October 11, 1975 -
13 - 8Planet of Evil (4) October 18, 1975 -
13 - 9Pyramids of Mars (1) October 25, 1975 -
13 - 10Pyramids of Mars (2) November 01, 1975 -
13 - 11Pyramids of Mars (3) November 08, 1975 -
13 - 12Pyramids of Mars (4) November 15, 1975 -
13 - 13The Android Invasion (1) November 22, 1975 -
13 - 14The Android Invasion (2) November 29, 1975 -
13 - 15The Android Invasion (3) December 06, 1975 -
13 - 16The Android Invasion (4) December 13, 1975 -
13 - 17The Brain of Morbius (1) January 03, 1976 -
13 - 18The Brain of Morbius (2) January 10, 1976 -
13 - 19The Brain of Morbius (3) January 17, 1976 -
13 - 20The Brain of Morbius (4) January 24, 1976 -
13 - 21The Seeds of Doom (1) January 31, 1976 -
13 - 22The Seeds of Doom (2) February 07, 1976 -
13 - 23The Seeds of Doom (3) February 14, 1976 -
13 - 24The Seeds of Doom (4) February 21, 1976 -
13 - 25The Seeds of Doom (5) February 28, 1976 -
13 - 26The Seeds of Doom (6) March 06, 1976