Season 4
Artwork
| # | Image | Title | Aired |
|---|---|---|---|
| 1 |  | William Returns | Aug 13, 2007 |
| 2 |  | Double Take | Aug 14, 2007 |
| 3 |  | Opening Act | Aug 30, 2007 |
| 4 |  | Wreck Room | Aug 15, 2007 |
| 5 |  | Skidbladnir | Aug 16, 2007 |
| 6 |  | Maiden Voyage | Aug 17, 2007 |
| 7 |  | Crash Course | Aug 20, 2007 |
| 8 |  | Replika | Aug 21, 2007 |
| 9 |  | I'd Rather Not Talk About It | Aug 22, 2007 |
| 10 |  | Hot Shower | Aug 23, 2007 |
| 11 |  | The Lake | Aug 24, 2007 |
| 12 |  | Lost at Sea | Aug 27, 2007 |
| 13 |  | Lab Rat | Aug 28, 2007 |
| 14 |  | Bragging Rights | Aug 29, 2007 |
| 15 |  | Dog Day Afternoon | Aug 29, 2007 |
| 16 |  | A Lack of Goodwill | Aug 30, 2007 |
| 17 |  | Distant Memory | Aug 31, 2007 |
| 18 |  | Hard Luck | Sep 8, 2007 |
| 19 |  | Guided Missile | Sep 15, 2007 |
| 20 |  | Kadic Bombshell | Sep 22, 2007 |
| 21 |  | Canine Conundrum | Sep 29, 2007 |
| 22 |  | A Space Oddity | Oct 6, 2007 |
| 23 |  | Cousins Once Removed | Oct 13, 2007 |
| 24 |  | Music to Soothe the Savage Beast | Oct 20, 2007 |
| 25 |  | Wrong Exposure | Oct 27, 2007 |
| 26 |  | Bad Connection | Nov 3, 2007 |
| 27 |  | Cold Sweat | Nov 3, 2007 |
| 28 |  | Down to Earth | Nov 3, 2007 |
| 29 |  | Fight to the Finish | Nov 10, 2007 |
| 30 |  | Echoes | Nov 10, 2007 |