January 17, 1980
Episode 1 of Season 4 premiered on January 17, 1980
January 18, 1980
Episode 2 of Season 4 premiered on January 18, 1980
March 28, 1980
Episode 3 of Season 4 premiered on March 28, 1980
April 1, 1980
Episode 4 of Season 4 premiered on April 1, 1980
April 11, 1980
Episode 5 of Season 4 premiered on April 11, 1980
April 15, 1980
Episode 6 of Season 4 premiered on April 15, 1980
April 17, 1980
Episode 7 of Season 4 premiered on April 17, 1980
May 7, 1980
Episode 8 of Season 4 premiered on May 7, 1980
August 29, 1980
Episode 9 of Season 4 premiered on August 29, 1980
August 30, 1980
Episode 10 of Season 4 premiered on August 30, 1980
November 9, 1980
Episode 11 of Season 4 premiered on November 9, 1980