Season 1 (2010)
7.46 avg 22 episodes 7.3 → 8.0 42 min avg
- Big finale
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | I Haven't Told You Everything | 7.3 | 632 |
| 2 | To Keep Us Safe | 7.3 | 467 |
| 3 | Protect Them from the Truth | 7.6 | 422 |
| 4 | A Matter of Life and Death | 7.4 | 382 |
| 5 | Casualties of War | 7.5 | 359 |
| 6 | Loyalty | 7.4 | 344 |
| 7 | I Know Who You Are | 7.3 | 313 |
| 8 | For the Good of Our Country | 7.4 | 312 |
| 9 | Your World to Take | 7.3 | 301 |
| 10 | Everything Will Change | 7.4 | 300 |
| 11 | And Then There Were More | 7.4 | 286 |
| 12 | Inostranka | 7.4 | 282 |
| 13 | Turnabout | 7.3 | 266 |
| 14 | A Message Back | 7.5 | 271 |
| 15 | Face Off | 7.7 | 290 |
| 16 | You Bury Other Things Too | 7.3 | 277 |
| 17 | Cut Off the Head | 7.3 | 269 |
| 18 | Strain | 7.5 | 263 |
| 19 | Us or Them | 7.5 | 263 |
| 20 | One Will Live, One Will Die | 7.7 | 271 |
| 21 | The Beginning of the End | 7.7 | 266 |
| 22 | Arrival | 8.0 | 345 |