CSI: Crime Scene Investigation Episode Ratings Heatmap
2000 · 15 Seasons · 335 Episodes · Overall Score: 7.5/10 (335 rated)
Season 7 holds the highest collective average score across the series.
Season 7 Details →Lowest score variance (σ = 0.47), maintaining an average of 7.8.
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 15 seasons and 335 episodes, CSI: Crime Scene Investigation has earned an overall series rating of 7.5 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 9, Episode 1 ("For Warrick"), rated at an extraordinary 9.1/10 with 10 ratings. Conversely, the lowest-rated installment is Season 11, Episode 3 ("Blood Moon"), landing at 6.0/10.
The most precipitous single-episode shift occurred in Season 9 between Episode 1 ("For Warrick", 9.1) and Episode 2 ("The Happy Place", 6.5), a swing of 2.6 points.
Top 10 Highest Rated Episodes of CSI: Crime Scene Investigation
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 9, Ep 1 | For Warrick | 9.1 | 10 | Oct 9, 2008 |
| #2 | Season 9, Ep 10 | One to Go | 8.8 | 10 | Jan 15, 2009 |
| #3 | Season 2, Ep 5 | Scuba Doobie-Doo | 8.6 | 12 | Oct 25, 2001 |
| #4 | Season 6, Ep 5 | Gum Drops | 8.6 | 12 | Oct 20, 2005 |
| #5 | Season 10, Ep 9 | Appendicitement | 8.6 | 10 | Dec 10, 2009 |
| #6 | Season 12, Ep 11 | Ms. Willows Regrets... (1) | 8.6 | 8 | Jan 18, 2012 |
| #7 | Season 6, Ep 10 | Still Life | 8.5 | 13 | Dec 8, 2005 |
| #8 | Season 7, Ep 16 | Monster in the Box | 8.5 | 13 | Feb 15, 2007 |
| #9 | Season 2, Ep 19 | Stalker | 8.5 | 12 | Apr 4, 2002 |
| #10 | Season 5, Ep 9 | Mea Culpa | 8.5 | 11 | Nov 25, 2004 |