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
E1
8.0
7.7
E2
8.1
7.8
E3
7.9
7.6
E4
7.8
Avg
8.0
7.7
Great
Good
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 8.1

S1E2 Cracking a Killer's Code: Part 2

As Susan and the other Bletchley women close in on the murderer of the five girls, a shocking discovery calls their theories into question and forces them to set a dangerous trap - a trap that puts one of them in even greater danger.

#2
S1E1 8.0

Cracking a Killer's Code: Part 1

When Susan Gray spots a hidden pattern in a series of murders, she tries to inform the police. But when they and her husband insist she forget her theory Susan enlists her wartime friends to try and track down the murderer.

#3
S1E3 7.9

Cracking a Killer's Code: Part 3

Thrown into a chilling confrontation with the murderer they have so brilliantly tracked down, Susan and the other Bletchley women become locked into a ever more dangerous game of cat and mouse that leads to a seemingly inescapable conclusion.

  1. 4. S2E2 "Blood on Their Hands: Part 2" 7.8
  2. 5. S2E4 "Uncustomed Goods: Part 2" 7.8
  3. 6. S2E1 "Blood on Their Hands: Part 1" 7.7
  4. 7. S2E3 "Uncustomed Goods: Part 1" 7.6

📉 Bottom Episodes

#7
S2E3 7.6

Uncustomed Goods: Part 1

Spirited Millie is earning a bit of money selling odds and ends on the black market. But Millie stumbles across a seam of post-Second World War unwholesomeness when she annoys some very dangerous people and gets into trouble. Soon, the other Bletchley girls must rally to her aid.

  1. 6. S2E1 "Blood on Their Hands: Part 1" 7.7
  2. 5. S2E4 "Uncustomed Goods: Part 2" 7.8
  3. 4. S2E2 "Blood on Their Hands: Part 2" 7.8
  4. 3. S1E3 "Cracking a Killer's Code: Part 3" 7.9
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 77.47.88.28.69 Rating 1 2 3 4 5 6 7 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:
4 Standouts
0 Infamous
3 Hidden Gems
0 Forgettable
Standouts Infamous Hidden Gems Forgettable Global: 7.5 7.27.47.67.77.98.1 Rating 359 421 493 578 678 Votes (log scale)
Top Standout: S1E1 Cracking a Killer's Code: Part 1
Best Hidden Gem: S2E2 Blood on Their Hands: Part 2

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

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 8.0 7.9 -0.1 S2 7.7 7.8 +0.1
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.

789 Rating S1 Rock Solid avg 8.0 S2 Rock Solid avg 7.7 Episode Premiere/Finale

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

SeriesScores.com