Doctor Pulaski fights to keep Commander Riker alive after he is infected by an parasite on Surata IV, an unexplored planet.
| Air Date | 17 July 1989 |
| Production Number | 40272-148 |
| Stardate | 42976.1 |
| Gregorian Calendar Date | Friday, 23 April 2365 23:14:12 GMT |
| Primary Arc | Bad Medicine |
| Secondary Arc | House of Riker |
| Tertiary Arc | n/a |
| See It or Skip It | Skip It… |
| Previously on Star Trek | Order | Next Time on Star Trek |
|---|---|---|
| Peak Performance | Chronological | Evolution |
| Peak Performance | Air Date | Evolution |
| Peak Performance | Production | Ensigns of Command |
| Manhunt | Primary Arc | The High Ground |
| Peak Performance | Secondary Arc | The Vengeance Factor |
| n/a | Tertiary Arc | n/a |
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