January 22, 1976
Episode 1 of Season 4 premiered on January 22, 1976
March 4, 1976
Episode 2 of Season 4 premiered on March 4, 1976
April 1, 1976
Episode 3 of Season 4 premiered on April 1, 1976
April 15, 1976
Episode 4 of Season 4 premiered on April 15, 1976
April 22, 1976
Episode 5 of Season 4 premiered on April 22, 1976