February 12, 1973
Episode 1 of 1973 premiered on February 12, 1973
March 26, 1973
Episode 2 of 1973 premiered on March 26, 1973
April 2, 1973
Episode 3 of 1973 premiered on April 2, 1973
April 16, 1973
Episode 4 of 1973 premiered on April 16, 1973
May 7, 1973
Piltdown Man. The story of the faked jaw and skull found in Sussex some 70 years ago. (1973)
July 9, 1973
Episode 6 of 1973 premiered on July 9, 1973