Season 4

01 Episode 1 Episode 18th January 1980 02 Episode 2 Episode 215th January 1980 03 Episode 3 Episode 322nd January 1980 04 Episode 4 Episode 429th January 1980 05 Episode 5 Episode 55th February 1980 06 Episode 6 Episode 612th February 1980 07 Episode 7 Episode 719th February 1980 08 Episode 8 Episode 826th February 1980 09 Episode 9 Episode 94th March 1980 10 Episode 10 Episode 1011th March 1980 11 Episode 11 Episode 1118th March 1980 12 Episode 12 Episode 121st April 1980 13 Episode 13 Episode 138th April 1980 14 Episode 14 Episode 1415th April 1980 15 Episode 15 Episode 1522nd April 1980 16 Episode 16 Episode 1613th May 1980 17 Episode 17 Episode 1727th May 1980 18 Episode 18 Episode 183rd June 1980 19 Episode 19 Episode 1910th June 1980 20 Episode 20 Episode 2017th June 1980 21 Episode 21 Episode 211st July 1980 22 Episode 22 Episode 228th July 1980 23 Episode 23 Episode 2315th July 1980 24 Episode 24 Episode 2422nd July 1980 25 Episode 25 Episode 2529th July 1980 26 Episode 26 Episode 265th August 1980 27 Episode 27 Episode 2712th August 1980 28 Episode 28 Episode 2819th August 1980 29 Episode 29 Episode 2926th August 1980 30 Episode 30 Episode 302nd September 1980 31 Episode 31 Episode 319th September 1980 32 Episode 32 Episode 3216th September 1980 33 Episode 33 Episode 3323rd September 1980 34 Episode 34 Episode 3430th September 1980 35 Episode 35 Episode 357th October 1980 36 Episode 36 Episode 3614th October 1980 37 Episode 37 Episode 3721st October 1980 38 Episode 38 Episode 3828th October 1980 39 Episode 39 Episode 394th November 1980 40 Episode 40 Episode 4011th November 1980 41 Episode 41 Episode 4118th November 1980 42 Episode 42 Episode 422nd December 1980 43 Episode 43 Episode 439th December 1980 44 Episode 44 Episode 4416th December 1980