Season 1 (2005)
7.30 avg 22 episodes 7.4 → 7.6 60 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Pilot | 7.4 | 273 |
| 2 | Lights Out | 7.1 | 241 |
| 3 | Watershed | 7.1 | 223 |
| 4 | Alpha Male | 7.0 | 217 |
| 5 | Unnatural Selection | 7.2 | 196 |
| 6 | The Hunt | 7.4 | 208 |
| 7 | Fish Story | 6.9 | 191 |
| 8 | The Cradle | 7.3 | 196 |
| 9 | The Dredge | 7.2 | 200 |
| 10 | Origin of Species | 7.7 | 208 |
| 11 | Us or Them | 7.5 | 207 |
| 12 | Power | 7.3 | 190 |
| 13 | Redemption | 7.3 | 190 |
| 14 | All God's Creatures | 7.1 | 199 |
| 15 | The Nest | 7.2 | 186 |
| 16 | The Fittest | 7.3 | 179 |
| 17 | The Key | 7.2 | 180 |
| 18 | Re-Evolution | 7.0 | 214 |
| 19 | The Son Also Rises | 7.3 | 186 |
| 20 | Run and Gun | 7.5 | 179 |
| 21 | Round Up | 7.9 | 195 |
| 22 | The Last Wave Goodbye | 7.6 | 259 |