April 6, 1981
Episode 1 of Season 4 premiered on April 6, 1981
April 13, 1981
Episode 2 of Season 4 premiered on April 13, 1981
April 27, 1981
Episode 3 of Season 4 premiered on April 27, 1981
May 11, 1981
Episode 4 of Season 4 premiered on May 11, 1981
May 18, 1981
Episode 5 of Season 4 premiered on May 18, 1981
June 1, 1981
Episode 6 of Season 4 premiered on June 1, 1981
June 8, 1981
Episode 7 of Season 4 premiered on June 8, 1981
June 15, 1981
Episode 8 of Season 4 premiered on June 15, 1981