Seasons & episodes
S1 · E1Failure's Contagious 8.5 / 10 · 2 published ratings 2022-04-01 · 57 min
River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.
S1 · E2Work Drinks 7.9 / 10 · 2 published ratings 2022-04-01 · 52 min
River and Sid join forces. A misfired gun has dire consequences.
S1 · E3Bad Tradecraft 7.8 / 10 · 2 published ratings 2022-04-08 · 42 min
Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.
S1 · E4Visiting Hours 7.1 / 10 · 1 published rating 2022-04-15 · 42 min
Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.
S1 · E5Fiasco 8.0 / 10 · 1 published rating 2022-04-22 · 42 min
The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.
S1 · E6Follies 8.4 / 10 · 1 published rating 2022-04-29 · 54 min
Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.
S2 · E1Last Stop 8.0 / 10 · 1 published rating 2022-12-02 · 44 min
Jackson Lamb is on high alert after a former spy is found dead. Min and Louisa are tempted by an offer from outside Slough House.
S2 · E2From Upshott with Love 8.0 / 10 · 1 published rating 2022-12-02 · 49 min
Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.
S2 · E3Drinking Games 8.4 / 10 · 1 published rating 2022-12-09 · 53 min
River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.
S2 · E4Cicada 8.5 / 10 · 1 published rating 2022-12-16 · 46 min
Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.
S2 · E5Boardroom Politics 8.1 / 10 · 1 published rating 2022-12-23 · 42 min
Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
S2 · E6Old Scores 8.4 / 10 · 1 published rating 2022-12-30 · 46 min
Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.
S3 · E1Strange Games 8.4 / 10 · 1 published rating 2023-11-29 · 44 min
A romantic relationship in Istanbul ends badly. Lamb hits the panic button when one of his Slow Horses fails to show up for work.
S3 · E2Hard Lessons 8.1 / 10 · 1 published rating 2023-11-29 · 44 min
River has to steal something out of the Park to save a life. Lamb realizes a stranger game is afoot.
S3 · E3Negotiating with Tigers 7.8 / 10 · 1 published rating 2023-12-06 · 45 min
Marcus and Shirley face Lamb's wrath. River discovers revenge is a dish best served cold.
S3 · E4Uninvited Guests 8.4 / 10 · 1 published rating 2023-12-13 · 47 min
Tearney makes a bold move. The Slow Horses assist the Tiger Team, unaware of their hidden agenda. Lamb and Ho take a road trip.
S3 · E5Cleaning Up 8.2 / 10 · 1 published rating 2023-12-20 · 42 min
Taverner and Tearney face off for control of MI5. River and Louisa find themselves caught in the crossfire.
S3 · E6Footprints 8.7 / 10 · 1 published rating 2023-12-27 · 45 min
The Slow Horses fight for their lives. Lamb shares some devastating truths with Catherine.
S4 · E1Identity Theft 8.3 / 10 · 1 published rating 2024-09-04 · 44 min
A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.
S4 · E2A Stranger Comes to Town 8.2 / 10 · 1 published rating 2024-09-11 · 47 min
A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.
S4 · E3Penny for Your Thoughts 8.0 / 10 · 1 published rating 2024-09-18 · 47 min
River is trapped in France. Back at Slough House, the Dogs have come for Lamb.
S4 · E4Returns 7.8 / 10 · 1 published rating 2024-09-25 · 43 min
Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
S4 · E5Grave Danger 7.8 / 10 · 1 published rating 2024-10-02 · 41 min
Lamb questions David about France as River comes face to face with the enemy.
S4 · E6Hello Goodbye 8.7 / 10 · 1 published rating 2024-10-09 · 53 min
Impossible decisions are faced and sacrifices are made.