| Episode | Title | Premiere |
|---|---|---|
| 20 | Incursion (Part 2) | Jun 11, 2010 |
| 19 | Incursion (Part 1) | Jun 4, 2010 |
| 18 | Subversion | May 21, 2010 |
| 17 | Pain | May 14, 2010 |
| 16 | Sabotage | May 7, 2010 |
| 15 | Lost | Apr 30, 2010 |
| 14 | Human | Apr 23, 2010 |
| 13 | Faith | Apr 16, 2010 |
| 12 | Divided | Apr 9, 2010 |
| 11 | Space | Apr 2, 2010 |
| 10 | Justice | Dec 4, 2009 |
| 09 | Life | Nov 20, 2009 |
| 08 | Time | Nov 13, 2009 |
| 07 | Earth | Nov 6, 2009 |
| 06 | Water | Oct 30, 2009 |
| 05 | Light | Oct 23, 2009 |
| 04 | Darkness | Oct 16, 2009 |
| 03 | Air, Part 3 | Oct 9, 2009 |
| 02 | Air, Part 2 | Oct 2, 2009 |
| 01 | Air, Part 1 | Oct 2, 2009 |
| Episode | Title | Premiere |
|---|---|---|
| 20 | Gauntlet | May 9, 2011 |
| 19 | Blockade | May 2, 2011 |
| 18 | Epilogue | Apr 25, 2011 |
| 17 | Common Descent | Apr 18, 2011 |
| 16 | The Hunt | Apr 11, 2011 |
| 15 | Seizure | Apr 4, 2011 |
| 14 | Hope | Mar 28, 2011 |
| 13 | Alliances | Mar 21, 2011 |
| 12 | Twin Destinies | Mar 14, 2011 |
| 11 | Deliverance | Mar 7, 2011 |
| 10 | Resurgence, Part 1 | Nov 30, 2010 |
| 09 | Visitation | Nov 23, 2010 |
| 08 | Malice | Nov 16, 2010 |
| 07 | The Greater Good | Nov 9, 2010 |
| 06 | Trial and Error | Nov 2, 2010 |
| 05 | Cloverdale | Oct 26, 2010 |
| 04 | Pathogen | Oct 19, 2010 |
| 03 | Awakening | Oct 12, 2010 |
| 02 | Aftermath | Oct 5, 2010 |
| 01 | Intervention (Part 3) | Sep 28, 2010 |
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