- 7.0/101 votes
#1 - The Colonel's Daughter
Season 2 Episode 7 - Aired 11/24/1964
The death of a butterfly collector's assistant in India opens an unlikely investigation.
Director: Philip Leacock
Writer: David Weir
- 6.7/103 votes
#2 - Black Sun
Season 1 Episode 10 - Aired 11/6/1975
The travelling Moon drifts within range of a black sun. Pulled toward certain destruction by its inescapable gravitational force, the Alphans employ desperate measures to stay alive. As a lifeboat Eagle carries six persons to safety, the Moon plunges into the black sun, with only an experimental forcefield protecting Alpha.
Director: Charles Crichton
Writer: David Weir