January 26, 1977
Episode 1 of Season 4 premiered on January 26, 1977
February 2, 1977
Episode 2 of Season 4 premiered on February 2, 1977
March 2, 1977
Episode 3 of Season 4 premiered on March 2, 1977
March 30, 1977
Episode 4 of Season 4 premiered on March 30, 1977
April 13, 1977
Episode 5 of Season 4 premiered on April 13, 1977
April 27, 1977
Episode 6 of Season 4 premiered on April 27, 1977
May 22, 1977
Episode 7 of Season 4 premiered on May 22, 1977
May 27, 1977
Episode 8 of Season 4 premiered on May 27, 1977
June 8, 1977
Episode 9 of Season 4 premiered on June 8, 1977
August 14, 1977
Episode 10 of Season 4 premiered on August 14, 1977
September 20, 1977
Episode 11 of Season 4 premiered on September 20, 1977
October 4, 1977
Episode 12 of Season 4 premiered on October 4, 1977
October 18, 1977
Episode 13 of Season 4 premiered on October 18, 1977
November 1, 1977
Episode 14 of Season 4 premiered on November 1, 1977
November 14, 1977
Episode 15 of Season 4 premiered on November 14, 1977
November 15, 1977
Episode 16 of Season 4 premiered on November 15, 1977
November 29, 1977
Episode 17 of Season 4 premiered on November 29, 1977
December 13, 1977
Episode 18 of Season 4 premiered on December 13, 1977