The captain, tactical officer, and communications officer are infected with a virus that causes them to mutate into another life form while on investigating a crashed Xindi spacecraft.
| Air Date | 24 September 2003 |
| Production Number | 055 |
| Stardate | n/a |
| Gregorian Calendar Date | 2153 |
| Primary Arc | The Xindi Crisis |
| Secondary Arc | n/a |
| Tertiary Arc | n/a |
| See It or Skip It | Skip It… |
Watch Trek 