When a young man is kidnapped and threatened with beheading, the slow horses find themselves unexpectedly embroiled in a dangerous case that forces them to prove their worth.
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Episode 1
Failure’s Contagious
River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.
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Episode 2
Work Drinks
River and Sid join forces. A misfired gun has dire consequences.
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Episode 3
Bad Tradecraft
Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.
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Episode 4
Visiting Hours
Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.
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Episode 5
Fiasco
The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.
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Episode 6
Follies
Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.