7.65 avg 10 episodes 7.4 → 7.8 41 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Secrets of the Skies | 7.4 | 86 |
| 2 | Black Sites | 7.7 | 66 |
| 3 | Extreme Missions | 7.7 | 61 |
| 4 | Strange Weapons | 7.7 | 53 |
| 5 | Mind Games | 7.6 | 52 |
| 6 | Deep Cover | 7.3 | 49 |
| 7 | Dark Science | 7.9 | 45 |
| 8 | Deep Space | 7.7 | 41 |
| 9 | Spy Tech | 7.7 | 41 |
| 10 | Unholy Alliances | 7.8 | 38 |
7.84 avg 10 episodes Still airing 7.9 → 7.8 41 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Escaping Armageddon | 7.9 | 29 |
| 2 | Top Secret Sites | 7.9 | 23 |
| 3 | Buried Secrets | 8.2 | 28 |
| 4 | Black Ops | 7.8 | 20 |
| 5 | Bizarre Weapons | 7.7 | 20 |
| 6 | Cracking the Code | 7.8 | 19 |
| 7 | Secret Units | 7.7 | 15 |
| 8 | Extraordinary Experiments | 7.8 | 15 |
| 9 | Smoke and Mirrors | 7.8 | 16 |
| 10 | Extreme Extractions | 7.8 | 15 |
