#1
S4E6
Hello Goodbye
Impossible decisions are faced and sacrifices are made.
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The peaks and the valleys. Find the essential episodes — and the ones to skip.
#2
S3E5
Cleaning Up
Taverner and Tearney face off for control of MI5. River and Louisa find themselves caught in the crossfire.
#3
S2E5
Boardroom Politics
Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
#4
Old Scores
S2E6
#5
Negotiating with Tigers
S3E3
#6
Footprints
S3E6
#7
Grave Danger
S4E5
#8
Scars
S5E6
#9
Identity Theft
S4E1
#10
Circus
S5E5
Lowlights
River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.
#29
Bad Dates
S5E1
#28
Work Drinks
S1E2
#27
From Upshott with Love
S2E2
#26
Incommunicado
S5E2
The Quality Arc
Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.
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Episode Engagement
High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.
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Series Trajectory
One point per season. Smooths out the episode-to-episode noise to reveal the bigger arc.
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Season Momentum
Did each season build or fizzle? Green means the finale outscored the premiere. Red means the opposite. Longer arrows, bigger swings.
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Season Consistency
How steady is each season? Tightly clustered dots mean reliable quality. Scattered dots mean a wild ride.
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