Episode Ratings Grid

Every episode at a glance, color-coded by rating. Rows are episode numbers within each season, columns are seasons.

M
S1
S2
S3
E1
7.5
7.1
7.4
E2
7.5
7.4
7.3
E3
7.4
7.1
7.3
E4
7.4
6.9
7.7
E5
7.4
7.3
7.5
E6
7.5
7.2
7.9
E7
7.4
7.1
7.6
E8
7.6
7.4
7.7
E9
7.8
7.4
7.8
E10
8.0
7.5
7.7
E11
7.8
E12
7.2
E13
7.3
E14
7.4
E15
7.6
E16
7.6
E17
8.3
E18
7.3
E19
7.2
E20
7.2
E21
7.3
Avg
7.5
7.4
7.6
Great
Good
Mid
SeriesScores.com

Episode Power Rankings

The best and worst episodes at a glance. Use this to find must-watch episodes or ones you might want to skip.

🏆 Top Episodes

#1 8.3

S2E17 The Promise

When the body of a young girl who was killed over 40 years ago is discovered at the bottom of Lake Mead, Max Roby promises her mother, Raquel Williams, that the CSI team will finally find justice for her daughter. Also, Greg Sanders brings his quirky humor as he returns to the crime lab.

#2
S1E10 8.0

Signed, Sealed, Delivered

When David Hodges goes missing, the entire CSI team searches for any piece of evidence that can help locate him, clear his name and save the reputation of the entire crime lab.

#3
S3E6 7.9

Atomic City

The CSI team investigates a radioactive crime scene that left a father and son dead.

  1. 4. S1E9 "Waiting in the Wings" 7.8
  2. 5. S2E11 "Trinket" 7.8
  3. 6. S3E9 "Heavy Metal" 7.8
  4. 7. S3E4 "Health and Wellness" 7.7
  5. 8. S3E8 "The Artist Is Present" 7.7
  6. 9. S3E10 "Tunnel Vision" 7.7
  7. 10. S1E8 "Pipe Cleaner" 7.6

📉 Bottom Episodes

#41
S2E4 6.9

Koala

When three masked assailants invade a home and murder an entire family, including a pregnant woman, the CSIs are called to the scene to investigate. Catherine leads the team through the emotional case, which intensifies her own longing to reconnect with her estranged daughter, Lindsey.

  1. 40. S2E7 "Burned" 7.1
  2. 39. S2E3 "Story of a Gun" 7.1
  3. 38. S2E1 "She's Gone" 7.1
  4. 37. S2E20 "Shell Game" 7.2
SeriesScores.com

The Quality Arc

Each point is an episode, plotted chronologically. The colored bands mark season boundaries. Look for upward or downward trends to see if quality improved or declined over time.

S1 S2 S3 66.67.27.88.49 Rating 5 10 15 20 25 30 35 40 45 Episode 10 9 8 7 6 5
SeriesScores.com

Episode Engagement

Vote count shows how many people cared enough to rate. High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

Rating threshold:
9 Standouts
12 Infamous
9 Hidden Gems
11 Forgettable
Standouts Infamous Hidden Gems Forgettable Global: 7.5 6.97.27.57.78.08.3 Rating 214 302 427 603 851 Votes (log scale)
Top Standout: S2E17 The Promise
Most Infamous: S2E4 Koala
Best Hidden Gem: S3E6 Atomic City

Episodes plotted by rating vs. vote count. The vertical line marks the rating threshold (7.5). More votes = more engagement. Toggle above to compare against global or show-specific median.

SeriesScores.com

Series Trajectory

A simplified view: one point per season. This smooths out episode-to-episode noise to show the overall arc of the series.

6.56.97.37.78.18.5 Rating S1 S2 S3 Season 10 9 8 7 6 5
SeriesScores.com

Season Momentum

Did each season build momentum or fizzle out? Green arrows mean the finale rated higher than the premiere. Red means the opposite. Longer arrows = bigger swings.

5678910 Rating S1 7.5 7.9 +0.4 S2 7.1 7.3 +0.2 S3 7.3 7.8 +0.4
SeriesScores.com

Season Consistency

Some seasons are reliable bangers. Others are hit-or-miss. Each dot is an episode. Tightly clustered dots mean consistent quality. Scattered dots mean a mixed bag.

6789 Rating S1 Steady avg 7.5 S2 Typical avg 7.4 S3 Steady avg 7.6 Episode Premiere/Finale

Each dot is an episode. Clustered dots = consistent quality. Scattered dots = variable season. Hover for episode details.

SeriesScores.com