An away team is captured while searching for a missing six-member science team on the planet Lactra VII.
| Air Date | 05 January 1974 |
| Production Number | 22016 |
| Stardate | 5501.2 |
| Gregorian Calendar Date | Friday, 14 February 2268 22:17:30 GMT Friday, 14 February 2268 23:52:05 GMT |
| Primary Arc | Final Frontier |
| Secondary Arc | n/a |
| Tertiary Arc | n/a |
| See It or Skip It | See It! |
| Previously on Star Trek | Order | Next Time on Star Trek |
|---|---|---|
| The Ambergris Element | Chronological | The Infinite Vulcan |
| The Slaver Weapon | Air Date | The Jihad |
| The Terratin Incident | Production | Once Upon a Planet |
| The Ambergris Element | Primary Arc | The Terratin Incident |
| n/a | Secondary Arc | n/a |
| n/a | Tertiary Arc | n/a |
Stardate Sidebar: Since this star date occurs during the prior episode, Kirk must have recorded this during “The Ambergris Element.” Therefore, it likely occurred earlier than the stardate stated during the episode. However, here we are using the stardate as stated to establish a date.
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