All Available Season All Season Specials Jan, 0001 2 episodes 0.0 Season 1 Nov, 1977 12 episodes 6.7 Season 2 Sep, 1978 22 episodes 7.0 Season 3 Sep, 1979 23 episodes 6.9 Season 4 Nov, 1980 18 episodes 4.5 Season 5 Oct, 1981 7 episodes 0.0
