Season 1 (1973)
6.10 avg 16 episodes 6.2 → 5.5 57 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Voyage of Discovery | 6.2 | 78 |
| 2 | Lazarus from the Mist | 6.3 | 57 |
| 3 | The Goddess Calabra | 6.4 | 60 |
| 4 | The Pisces | 7.1 | 55 |
| 5 | Children of Methuselah | 6.2 | 45 |
| 6 | And Only Man Is Vile | 5.7 | 44 |
| 7 | Circuit of Death | 6.4 | 43 |
| 8 | Gallery of Fear | 6.3 | 42 |
| 9 | Mr. Smith of Manchester | 6.1 | 41 |
| 10 | The Alien Oro | 6.1 | 38 |
| 11 | Astro-Medics | 6.4 | 38 |
| 12 | The Implant People | 5.4 | 34 |
| 13 | The Return of Oro | 6.1 | 33 |
| 14 | Farthing's Comet | 5.6 | 36 |
| 15 | The Beehive | 5.8 | 34 |
| 16 | Space Precinct | 5.5 | 34 |
