The investigation was conducted Episode Ratings Heatmap
2006 · 5 Seasons · 158 Episodes · Overall Score: 7.6/10 (32 rated)
Season 1 holds the highest collective average score across the series.
Season 1 Details →Lowest score variance (σ = 0.72), maintaining an average of 7.6.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 |
|---|---|---|---|---|---|
| Ep 1 | 7.0 | – | – | – | – |
| Ep 2 | 7.0 | – | – | – | – |
| Ep 3 | 7.0 | – | – | – | – |
| Ep 4 | 7.0 | – | – | – | – |
| Ep 5 | 7.0 | – | – | – | – |
| Ep 6 | 7.0 | – | – | – | – |
| Ep 7 | 7.0 | – | – | – | – |
| Ep 8 | 7.0 | – | – | – | – |
| Ep 9 | 7.0 | – | – | – | – |
| Ep 10 | 7.0 | – | – | – | – |
| Ep 11 | 7.0 | – | – | – | – |
| Ep 12 | 7.0 | – | – | – | – |
| Ep 13 | 7.0 | – | – | – | – |
| Ep 14 | 7.0 | – | – | – | – |
| Ep 15 | 7.0 | – | – | – | – |
| Ep 16 | 7.0 | – | – | – | – |
| Ep 17 | 7.0 | – | – | – | – |
| Ep 18 | 7.0 | – | – | – | – |
| Ep 19 | 8.0 | – | – | – | – |
| Ep 20 | 8.0 | – | – | – | – |
| Ep 21 | 8.0 | – | – | – | – |
| Ep 22 | 8.0 | – | – | – | – |
| Ep 23 | 8.0 | – | – | – | – |
| Ep 24 | 8.0 | – | – | – | – |
| Ep 25 | 8.0 | – | – | – | – |
| Ep 26 | 8.0 | – | – | – | – |
| Ep 27 | 9.0 | – | – | – | – |
| Ep 28 | 9.0 | – | – | – | – |
| Ep 29 | 9.0 | – | – | – | – |
| Ep 30 | 9.0 | – | – | – | – |
| Ep 31 | 8.0 | – | – | – | – |
| Ep 32 | 8.0 | – | – | – | – |
| Ep 33 | – | – | – | – | – |
| Ep 34 | – | – | – | – | – |
| Ep 35 | – | – | – | – | – |
| Ep 36 | – | – | – | – | – |
| Season Avg | 7.6 | – | – | – | – |
Ratings Analysis & Trajectory
Across 5 seasons and 158 episodes, The investigation was conducted has earned an overall series rating of 7.6 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 1, Episode 27 ("Episode 27"), rated at an extraordinary 9.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 1, Episode 18 ("Episode 18"), landing at 7.0/10.
The most precipitous single-episode shift occurred in Season 1 between Episode 30 ("Episode 30", 9) and Episode 31 ("Episode 31", 8), a swing of 1 points.
Top 10 Highest Rated Episodes of The investigation was conducted
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 1, Ep 27 | Episode 27 | 9.0 | 1 | Nov 17, 2006 |
| #2 | Season 1, Ep 28 | Episode 28 | 9.0 | 1 | Nov 24, 2006 |
| #3 | Season 1, Ep 29 | Episode 29 | 9.0 | 1 | Dec 8, 2006 |
| #4 | Season 1, Ep 30 | Episode 30 | 9.0 | 1 | Dec 15, 2006 |
| #5 | Season 1, Ep 19 | Episode 19 | 8.0 | 2 | Sep 15, 2006 |
| #6 | Season 1, Ep 20 | Episode 20 | 8.0 | 2 | Sep 22, 2006 |
| #7 | Season 1, Ep 21 | Episode 21 | 8.0 | 2 | Sep 29, 2006 |
| #8 | Season 1, Ep 22 | Episode 22 | 8.0 | 2 | Oct 6, 2006 |
| #9 | Season 1, Ep 23 | Episode 23 | 8.0 | 2 | Oct 13, 2006 |
| #10 | Season 1, Ep 24 | Episode 24 | 8.0 | 2 | Oct 20, 2006 |