February 22, 1980
Episode 1 of Season 4 premiered on February 22, 1980
March 21, 1980
Episode 2 of Season 4 premiered on March 21, 1980
April 7, 1980
Episode 3 of Season 4 premiered on April 7, 1980
April 25, 1980
Episode 4 of Season 4 premiered on April 25, 1980
May 22, 1980
Episode 5 of Season 4 premiered on May 22, 1980
September 26, 1980
Episode 6 of Season 4 premiered on September 26, 1980