Space: 1999 - Season 1 - Eps 12: End of Eternity
While exploring an asteroid, the Alphans injure an alien trapped within. Bringing him to Alpha, they discover his wounds have completely healed. The indestructible Balor is a scientist whose people had discovered the secret of immortality. Balor is a psychopath, offering a drastic solution to his people's apathy; now freed of the eternal prison, he plans to spend eternity practicing the art of pain and torture, with the Alphans as his subjects.
About Space: 1999

Title: Space: 1999
First Air Date: 1975-09-04
Last Air Date: 1977-11-12
Status: Ended
Rating: 7.075/10 (from 134 votes)
Language: EN
Seasons: 3
Total Episodes: 48
Network: ITV1
Genres: Sci-Fi & Fantasy
Production Companies: Group 3, RAI, ITC Entertainment, RAI Cinema
Synopsis
The crew of Moonbase Alpha must struggle to survive when a massive explosion throws the Moon from orbit into deep space.
Cast

Martin Landau
John Koenig

Barbara Bain
Helena Russell

Catherine Schell
Maya

Tony Anholt
Tony Verdeschi