Non corporeal aliens study the Enterprise crew as they respond to a fatal viral infection brought on board from an away mission.
| Title | Observer Effect |
|---|---|
| Genres | Sci-Fi & Fantasy Action & Adventure Drama |
| Release Date | 2005-01-21 |
| Episode Runtime | 00 Hours 44 Minutes |
| Season Number | 4 |
| Episode Number | 11 |
| Production Companies | Paramount Television, CBS Studios |
