Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.96), maintaining an average of 9.3.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
Ratings Analysis & Trajectory
Across 3 seasons and 16 episodes, Zero Hour has earned an overall series rating of 8.5 out of 10. The series reached its critical peak early, showing a slight contraction in audience satisfaction in later chapters.
The single highest-rated hour of television in the series is Season 1, Episode 1 ("Disaster at Chernobyl"), rated at an extraordinary 10.0/10 with 3 ratings. Conversely, the lowest-rated installment is Season 2, Episode 6 ("The Plot to Kill the Pope"), landing at 6.0/10.
The most precipitous single-episode shift occurred in Season 2 between Episode 4 ("The King of Cocaine", 10) and Episode 5 ("Capturing Saddam", 8), a swing of 2 points.
Top 10 Highest Rated Episodes of Zero Hour
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 1 | Disaster at Chernobyl | 10.0 | 3 | Aug 29, 2004 |
| #2 | Season 1, Ep 2 | Massacre at Columbine High | 10.0 | 3 | Feb 21, 2013 |
| #3 | Season 2, Ep 4 | The King of Cocaine | 10.0 | 1 | – |
| #4 | Season 3, Ep 1 | Operation Certain Death: The SAS in Sierra Leone | 10.0 | 1 | – |
| #5 | Season 1, Ep 3 | The Last Hour of Flight 11 | 9.0 | 2 | Feb 28, 2013 |
| #6 | Season 2, Ep 3 | The Sinking of the Estonia | 9.0 | 2 | – |
| #7 | Season 1, Ep 4 | Terror in Tokyo | 8.0 | 2 | Mar 7, 2013 |
| #8 | Season 2, Ep 2 | One of America's Own | 8.0 | 1 | – |
| #9 | Season 2, Ep 5 | Capturing Saddam | 8.0 | 1 | – |
| #10 | Season 3, Ep 2 | Falling Star - Columbia | 8.0 | 1 | Jan 19, 2007 |