Doctor McCoy has to deliver a baby while being chased by Klingons through the hills of an alien planet.
| Air Date | 01 December 1967 |
| Production Number | 60332 |
| Stardate | 3496.61 |
| Gregorian Calendar Date | Monday, 31 December 2266 04:40:31 GMT Monday, 31 December 2266 17:15:32 GMT |
| Primary Arc | The Klingons |
| Secondary Arc | Bad Medicine |
| Tertiary Arc | n/a |
| See It or Skip It | Skip It… |
| Previously on Star Trek | Order | Next Time on Star Trek |
|---|---|---|
| The Deadly Years | Chronological | The Changeling |
| Journey to Babel | Air Date | The Deadly Years |
| Metamorphosis | Production | Who Mourns for Adonais? |
| Errand of Mercy | Primary Arc | A Private Little War |
| The Deadly Years | Secondary Arc | Journey to Babel |
| n/a | Tertiary Arc | n/a |
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