Space: 1999: S1 E24 - The Testament Of Arkadia Space: 1999

The Alphans land on the planet Arkadia, where glyphs suggest it is the cradle of civilization from which life on Earth began. Now it is desolate and Koenig feels it is unsuitable for colonization. Two renegade crew members have other ideas, however, and take Helena hostage in their demands to settle on Arkadia.