Leonard Nimoy hosts investigations into various mysteries.
1 - 1Other Voices Apr. 17, 1977
1 - 2Strange Visitors (aka Oracle Chamber) Apr. 24, 1977
1 - 3Ancient Aviators (aka Ancient Flight) Apr. 24, 1977
1 - 4The Bermuda Triangle Apr. 27, 1977
1 - 5Bigfoot Apr. 28, 1977
1 - 6Killer Bees May. 01, 1977
1 - 7Earthquakes May. 07, 1977
1 - 8The Mummy's Curse May. 14, 1977
1 - 9Martians May. 21, 1977
1 - 10Atlantis May. 22, 1977- 1 - 11Psychic Detectives May. 26, 1977
- 1 - 12A Call from Space May. 28, 1977
- 1 - 13Learning ESP May. 28, 1977
- 1 - 14Nazi Plunder May. 29, 1977
- 1 - 15Amelia Earhart Jun. 01, 1977
- 1 - 16Dracula Jun. 08, 1977
- 1 - 17The Easter Island Massacre Jun. 15, 1977
- 1 - 18Ghosts Jun. 22, 1977
- 1 - 19Life After Death (aka Near Death Experiences) Jun. 29, 1977
- 1 - 20The Loch Ness Monster Jul. 06, 1977
- 1 - 21UFOs Jul. 13, 1977
- 1 - 22Voodoo Jul. 26, 1977
- 1 - 23Inca Treasures Aug. 11, 1977
- 1 - 24The Magic of Stonehenge Sep. 10, 1977