The Enterprise arrives at Argo, a planet mostly covered in seawater, on a mission to understand how tectonic activity submerged its continents in order to save lives on another planet going through a similar seismic event. Oh, and Kirk becomes a merman.
| Air Date | 01 December 1973 |
| Production Number | 22013 |
| Stardate | 5499.9 |
| Gregorian Calendar Date | Friday, 14 February 2268 15:53:36 GMT Friday, 21 February 2268 18:36: 30 GMT |
| Primary Arc | Bad Medicine |
| Secondary Arc | Final Frontier |
| Tertiary Arc | n/a |
| See It or Skip It | Skip It.. |
| Previously on Star Trek | Order | Next Time on Star Trek |
|---|---|---|
| The Lorelei Signal | Chronological | The Eye of the Beholder |
| The Time Trap | Air Date | The Slaver Weapon |
| The Slaver Weapon | Production | The Jihad |
| The Lorelei Signal | Primary Arc | The Lights of Zetar |
| The Lorelei Signal | Secondary Arc | The Eye of the Beholder |
| n/a | Tertiary Arc | n/a |
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