| episode | air date | countdown | title |
| S01E22 | 2011-05-23 | | Arrival | |
| S01E21 | 2011-05-16 | | The Beginning of the End | |
| S01E20 | 2011-05-09 | | One Will Live, One Will Die | |
| S01E19 | 2011-05-02 | | Us or Them | |
| S01E18 | 2011-04-25 | | Strain | |
| S01E17 | 2011-04-18 | | Cut Off the Head | |
| S01E16 | 2011-04-04 | | You Bury Other Things Too | |
| S01E15 | 2011-03-28 | | Face Off | |
| S01E14 | 2011-03-21 | | A Message Back | |
| S01E13 | 2011-03-14 | | Turnabout | |
| S01E12 | 2011-03-07 | | Inostranka (2) | |
| S01E11 | 2011-03-07 | | And Then There Were More (1) | |
| S01E10 | 2010-11-29 | | Everything Will Change | |
| S01E09 | 2010-11-22 | | Your World to Take | |
| S01E08 | 2010-11-15 | | For the Good of Our Country | |
| S01E07 | 2010-11-08 | | I Know Who You Are | |
| S01E06 | 2010-10-25 | | Loyalty | |
| S01E05 | 2010-10-18 | | Casualties of War | |
| S01E04 | 2010-10-11 | | A Matter of Life and Death | |
| S01E03 | 2010-10-04 | | Protect Them from the Truth | |
| S01E02 | 2010-09-27 | | To Keep Us Safe | |
| S01E01 | 2010-09-20 | | I Haven't Told You Everything | |
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