Season 4
Artwork
| # | Image | Title | Aired |
|---|---|---|---|
| 1 |  | Authorized Personnel Only (1) | Jan 5, 2005 |
| 2 |  | Authorized Personnel Only (2) | Jan 5, 2005 |
| 3 |  | The Awful Truth | Jan 12, 2005 |
| 4 |  | Ice | Jan 19, 2005 |
| 5 |  | Welcome to Liberty Village | Jan 26, 2005 |
| 6 |  | Nocturne | Feb 9, 2005 |
| 7 |  | Détente | Feb 16, 2005 |
| 8 |  | Echoes | Feb 23, 2005 |
| 9 |  | A Man of His Word | Mar 2, 2005 |
| 10 |  | The Index | Mar 9, 2005 |
| 11 |  | The Road Home | Mar 16, 2005 |
| 12 |  | The Orphan | Mar 23, 2005 |
| 13 |  | Tuesday | Mar 30, 2005 |
| 14 |  | Nightingale | Apr 6, 2005 |
| 15 |  | Pandora | Apr 13, 2005 |
| 16 |  | Another Mister Sloane | Apr 20, 2005 |
| 17 |  | A Clean Conscience | Apr 27, 2005 |
| 18 |  | Mirage | May 4, 2005 |
| 19 |  | In Dreams... | May 11, 2005 |
| 20 |  | The Descent | May 18, 2005 |
| 21 |  | Search and Rescue | May 18, 2005 |
| 22 |  | Before the Flood | May 25, 2005 |