January 23, 1970 • 1h 30m
Episode 1 of Season 4 premiered on January 23, 1970
March 6, 1970 • 1h 30m
Episode 2 of Season 4 premiered on March 6, 1970
April 17, 1970 • 1h 30m
Episode 3 of Season 4 premiered on April 17, 1970
May 22, 1970 • 1h 30m
Episode 4 of Season 4 premiered on May 22, 1970
June 19, 1970 • 1h 30m
Episode 5 of Season 4 premiered on June 19, 1970
July 10, 1970 • 1h 30m
Episode 6 of Season 4 premiered on July 10, 1970
September 11, 1970 • 1h 30m
Episode 7 of Season 4 premiered on September 11, 1970
October 16, 1970 • 1h 30m
Episode 8 of Season 4 premiered on October 16, 1970
November 13, 1970 • 1h 30m
Episode 9 of Season 4 premiered on November 13, 1970
December 11, 1970 • 1h 30m
Episode 10 of Season 4 premiered on December 11, 1970