Leonard Nimoy hosts investigations into various mysteries.
5 - 1UFO Coverups Sep. 20, 1980- 5 - 2Faith Healing Sep. 27, 1980
- 5 - 3Lee Harvey Oswald Oct. 04, 1980
- 5 - 4Daredevil Death Wish Oct. 11, 1980
- 5 - 5Life After Life (aka Out of Body Experiences) Oct. 18, 1980
- 5 - 6Moon Madness Oct. 25, 1980
- 5 - 7Dangerous Volcanoes Nov. 01, 1980
- 5 - 8The Lindbergh Kidnapping Nov. 08, 1980
- 5 - 9Acupuncture Nov. 15, 1980
- 5 - 10Jimmy Hoffa Nov. 22, 1980
- 5 - 11Fountain of Youth Nov. 29, 1980
- 5 - 12Laugh Therapy Dec. 06, 1980
- 5 - 13Salem Witches Dec. 13, 1980
- 5 - 14Super Children Dec. 27, 1980
- 5 - 15The Great Wall of China Jan. 10, 1981
- 5 - 16The Castle of Secrets (aka Coral Castle) Jan. 24, 1981
- 5 - 17Great Lovers Jan. 31, 1981
- 5 - 18The Holy Grail Feb. 07, 1981
- 5 - 19The Death of Marilyn Monroe Feb. 14, 1981
- 5 - 20Chinese Explorers Feb. 21, 1981
- 5 - 21The Hindenburg Mystery Feb. 21, 1981
- 5 - 22The End of the World Apr. 30, 1981
- 5 - 23The Lusitania May. 16, 1981
- 5 - 24Sun Worshippers May. 19, 1981