Space: 1999 Season 2 Episode 11
Seed of Destruction
Whilst he is exploring an asteroid Koenig is taken over by an alien race known as the Kalthon, who replace him with an exact double. In consequence every action ordered by the fake Koenig is solely for the benefit of the Kalthon and to the detriment of the welfare of the Alphans. Helena realizes that something is wrong when 'Koenig' is cold to the touch and needs to convince the other crew members.
- 2 - 24The DorconsNov. 12, 1977
- 2 - 23The Immunity SyndromeOct. 29, 1977
- 2 - 22Devil's PlanetSep. 01, 1977
- 2 - 21DorzakAug. 25, 1977
- 2 - 20The Seance SpectreAug. 18, 1977
- 2 - 19The Bringers of Wonder (2)Aug. 11, 1977
- 2 - 18The Bringers of Wonder (1)Aug. 04, 1977
- 2 - 17The Lambda FactorDec. 23, 1976
- 2 - 16The Beta CloudDec. 16, 1976
- 2 - 15A Matter of BalanceDec. 09, 1976
- 2 - 14Space WarpDec. 02, 1976
- 2 - 13Catacombs of the MoonNov. 25, 1976
- 2 - 12The AB ChrysalisNov. 18, 1976
- 2 - 11Seed of DestructionNov. 11, 1976
- 2 - 10The TayborNov. 04, 1976
- 2 - 9All That GlistersOct. 28, 1976
- 2 - 8The Rules of LutonOct. 23, 1976
- 2 - 7The Mark of ArchanonOct. 16, 1976
- 2 - 6New Adam, New EveOct. 09, 1976
- 2 - 5Brian the BrainOct. 02, 1976
- 2 - 4One Moment of HumanitySep. 25, 1976
- 2 - 3Journey to WhereSep. 18, 1976
- 2 - 2The ExilesSep. 11, 1976
- 2 - 1The MetamorphSep. 04, 1976