| Title | Season Episode | Airdate | Stardate | Year | Rating | |
| The Lorelei Signal | 1 x 04 | 4 | 29 Sep 1973 | 5483.7 | 2268 |  |
| More Tribbles, More Troubles | 1 x 05 | 5 | 6 Oct 1973 | 5392.4 | 2268 | |
| Mudd's Passion | 1 x 10 | 10 | 10 Nov 1973 | 4978.5 | 2268 | |
| The Ambergris Element | 1 x 13 | 13 | 1 Dec 1973 | 5499.9 | 2268 | |
| The Slaver Weapon | 1 x 14 | 14 | 15 Dec 1973 | 4187.3 | 2267 | |
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