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
S4
S5
S6
S7
S8
S9
S10
E1
7.5
8.4
8.4
8.4
8.5
6.9
7.6
6.5
4.1
6.2
E2
7.7
8.3
8.4
8.5
8.6
6.7
7.2
7.4
7.3
5.0
E3
7.9
7.8
8.4
8.4
7.9
6.7
8.0
7.4
6.2
?
E4
7.7
8.1
8.3
8.5
8.4
8.3
7.8
7.5
5.2
6.4
E5
7.8
8.0
8.3
8.4
8.5
7.4
8.0
7.9
6.4
?
E6
7.8
8.2
8.3
8.3
8.6
7.7
7.1
8.2
?
?
E7
7.7
8.2
8.1
8.4
8.5
7.9
7.7
8.4
?
?
E8
7.7
8.0
8.4
8.3
8.5
8.0
6.8
7.4
?
?
E9
7.8
8.1
8.5
8.3
8.2
7.0
8.8
8.0
5.2
?
E10
7.9
8.0
8.4
8.6
8.6
7.1
7.7
6.8
7.2
?
E11
8.0
8.5
8.3
8.4
8.5
7.7
7.7
?
?
?
E12
8.1
8.2
8.2
8.6
9.2
8.0
7.1
6.2
?
E13
8.1
8.2
8.1
8.1
8.9
7.6
7.2
?
?
E14
8.0
8.5
9.0
6.6
5.6
?
?
E15
9.0
8.8
7.5
6.4
?
5.8
?
E16
E17
?
Avg
7.8
8.1
8.3
8.4
8.6
7.4
7.4
7.4
5.9
5.9
Excellent
Great
Good
Mid
Bad
Awful
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 9.2

S5E12 Episode #5.12

Featuring a female dinosaur expert who sells seashells down on the seashore, Brian the handsome scientist reveals the weird wonders of the Greek Universe, TV's fastest-talking pensioner, Bob Hale, tries to explain the Space Race between the USA and the USSR, and there's a fitting musical finale to the end of the series.

#2
S4E15 9.0

Scary Special

Death gets a good look around as he reveals his creepiest moments - a Tudor family show the extent of their ghostly superstitions and the Vikings demonstrate how to become truly terrifying to enemies.

#3
S5E14 9.0

Ridiculous Romance

  1. 4. S5E13 "Song Special" 8.9
  2. 5. S5E15 "Frightful First World War" 8.8
  3. 6. S7E9 "Revolting Russian Revolutions" 8.8
  4. 7. S4E10 "Episode #4.10" 8.6
  5. 8. S4E12 "Episode #4.12" 8.6
  6. 9. S5E2 "Episode #5.2" 8.6
  7. 10. S5E6 "Episode #5.6" 8.6

📉 Bottom Episodes

#122
S9E1 4.1

British Black History

Horrible Histories charts the contribution of Black people to British life throughout history. How did African soldiers come to be guarding Hadrian’s Wall? Why was a West African diver asked to help salvage Henry VIII's ship, the Mary Rose? And the actor Ira Aldridge tells us how he came to leave New York to find fame in 19th-century England.

  1. 121. S10E2 "NHS 75th Birthday Special" 5.0
  2. 120. S9E9 "Banging Bling" 5.2
  3. 119. S9E4 "Precious Planet" 5.2
  4. 118. S7E14 "Awesome Ancient Civilisations" 5.6
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 S4 S5 S6 S7 S8 S9 S10 3.54.86.17.48.710 Rating 15 30 45 60 75 90 105 120 135 150 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:
59 Standouts
2 Infamous
32 Hidden Gems
29 Forgettable
Standouts Infamous Hidden Gems Forgettable Global: 7.5 4.15.16.17.28.29.2 Rating 6 13 29 64 140 Votes (log scale)
Top Standout: S1E1 Episode #1.1
Most Infamous: S6E1 Magna Carta Special: Crooked King John and Magna Carta
Best Hidden Gem: S4E15 Scary Special

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.

55.96.87.78.69.5 Rating S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 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 7.7 8.1 +0.4 S2 8.3 8.2 -0.1 S3 8.4 8.2 -0.2 S4 8.4 8.5 +0.1 S5 8.5 8.9 +0.4 S6 6.7 7.5 +0.8 S7 7.6 6.4 -1.2 S8 7.4 6.8 -0.6 S9 5.7 6.5 +0.8 S10 6.2 6.4 +0.2
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.

3467910 Rating S1 Steady avg 7.8 S2 Steady avg 8.1 S3 Rock Solid avg 8.3 S4 Steady avg 8.4 S5 Typical avg 8.6 S6 Uneven avg 7.4 S7 Erratic avg 7.4 S8 Uneven avg 7.4 S9 Erratic avg 5.9 S10 Uneven avg 5.9 Episode Premiere/Finale

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

SeriesScores.com