October 26, 1972
Episode 1 of Season 4 premiered on October 26, 1972
November 2, 1972
Episode 2 of Season 4 premiered on November 2, 1972
November 9, 1972
Episode 3 of Season 4 premiered on November 9, 1972
November 16, 1972
Episode 4 of Season 4 premiered on November 16, 1972
November 23, 1972
Episode 5 of Season 4 premiered on November 23, 1972
November 30, 1972
Episode 6 of Season 4 premiered on November 30, 1972
December 7, 1972
Episode 7 of Season 4 premiered on December 7, 1972
December 14, 1972
Episode 8 of Season 4 premiered on December 14, 1972
December 21, 1972
Episode 9 of Season 4 premiered on December 21, 1972
December 28, 1972
Episode 10 of Season 4 premiered on December 28, 1972
January 4, 1973
Episode 11 of Season 4 premiered on January 4, 1973
January 11, 1973
Episode 12 of Season 4 premiered on January 11, 1973
January 18, 1973
Episode 13 of Season 4 premiered on January 18, 1973
January 25, 1973
Episode 14 of Season 4 premiered on January 25, 1973
February 1, 1973
Episode 15 of Season 4 premiered on February 1, 1973
February 8, 1973
Episode 16 of Season 4 premiered on February 8, 1973
February 15, 1973
Episode 17 of Season 4 premiered on February 15, 1973
February 22, 1973
Episode 18 of Season 4 premiered on February 22, 1973
March 1, 1973
Episode 19 of Season 4 premiered on March 1, 1973
March 8, 1973
Episode 20 of Season 4 premiered on March 8, 1973
March 15, 1973
Episode 21 of Season 4 premiered on March 15, 1973
March 22, 1973
Episode 22 of Season 4 premiered on March 22, 1973
March 29, 1973
Episode 23 of Season 4 premiered on March 29, 1973
April 5, 1973
Episode 24 of Season 4 premiered on April 5, 1973
April 12, 1973
Episode 25 of Season 4 premiered on April 12, 1973
April 19, 1973
Episode 26 of Season 4 premiered on April 19, 1973
April 26, 1973
Episode 27 of Season 4 premiered on April 26, 1973
May 3, 1973
Episode 28 of Season 4 premiered on May 3, 1973
May 10, 1973
Episode 29 of Season 4 premiered on May 10, 1973
May 17, 1973
Episode 30 of Season 4 premiered on May 17, 1973
May 24, 1973
Episode 31 of Season 4 premiered on May 24, 1973
May 31, 1973
Episode 32 of Season 4 premiered on May 31, 1973