| Series |  |
 |
|
|
|
|
|
|
| The Original Series | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 3.50 |
| Total | 2 | 0 | 0 | 0 | 1 | 1 | 0 | 3.50 |
| Title | Season episode | Airdate | Stardate | Year | Rating | |
| Obsession | 2 x 18 | 48 | 15 Dec 1967 | 3619.2 | 2268 |  |
| Assignment: Earth | 2 x 26 | 56 | 29 Mar 1968 | Unknown | 2268 |  |
| © Graham & Ian Kennedy | Page views : 13,112 | Last updated : 27 Jul 2022 |