Season 4
Artwork
| # | Image | Title | Aired |
|---|---|---|---|
| 1 |  | Mayhem | Sep 24, 2008 |
| 2 |  | The Angel Maker | Oct 1, 2008 |
| 3 |  | Minimal Loss | Oct 8, 2008 |
| 4 |  | Paradise | Oct 22, 2008 |
| 5 |  | Catching Out | Oct 29, 2008 |
| 6 |  | The Instincts | Nov 5, 2008 |
| 7 |  | Memoriam | Nov 12, 2008 |
| 8 |  | Masterpiece | Nov 19, 2008 |
| 9 |  | 52 Pickup | Nov 26, 2008 |
| 10 |  | Brothers in Arms | Dec 10, 2008 |
| 11 |  | Normal | Dec 17, 2008 |
| 12 |  | Soul Mates | Jan 14, 2009 |
| 13 |  | Bloodline | Jan 21, 2009 |
| 14 |  | Cold Comfort | Feb 11, 2009 |
| 15 |  | Zoe's Reprise | Feb 18, 2009 |
| 16 |  | Pleasure Is My Business | Feb 25, 2009 |
| 17 |  | Demonology | Mar 11, 2009 |
| 18 |  | Omnivore | Mar 18, 2009 |
| 19 |  | House on Fire | Mar 25, 2009 |
| 20 |  | Conflicted | Apr 8, 2009 |
| 21 |  | A Shade of Gray | Apr 22, 2009 |
| 22 |  | The Big Wheel | Apr 29, 2009 |
| 23 |  | Roadkill | May 6, 2009 |
| 24 |  | Amplification | May 13, 2009 |
| 25 |  | To Hell... (1) | May 20, 2009 |
| 26 |  | ...and Back (2) | May 20, 2009 |