Slow Horses

S01E01 Failure's Contagious 2022-04-01

River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.

Pilot note — From the desk: Slow Horses opens its catalog run with “Failure's Contagious” (2022-04-01). Apple's stealth prestige winner; Oldman late-career heat. Book-accurate grime pride and quiet awards campaigning.

S01E02 Work Drinks 2022-04-01

River and Sid join forces. A misfired gun has dire consequences.

S01E03 Bad Tradecraft 2022-04-08

Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.

S01E04 Visiting Hours 2022-04-15

Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.

S01E05 Fiasco 2022-04-22

The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.

S01E06 Follies 2022-04-29

Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.

S02E01 Last Stop 2022-12-02

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.

S02E02 From Upshott with Love 2022-12-02

Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.

S02E03 Drinking Games 2022-12-09

River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.

S02E04 Cicada 2022-12-16

Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.

S02E05 Boardroom Politics 2022-12-23

Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.

S02E06 Old Scores 2022-12-30

Season finale. Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.

S03E01 Strange Games 2023-11-29

A romantic relationship in Istanbul ends badly. Lamb hits the panic button when one of his Slow Horses fails to show up for work.

S03E02 Hard Lessons 2023-11-29

River has to steal something out of the Park to save a life. Lamb realizes a stranger game is afoot.

S03E03 Negotiating With Tigers 2023-12-06

Marcus and Shirley face Lamb's wrath. River discovers revenge is a dish best served cold.

S03E04 Uninvited Guests 2023-12-13

Tearney makes a bold move. The Slow Horses assist the Tiger Team, unaware of their hidden agenda. Lamb and Ho take a road trip.

S03E05 Cleaning Up 2023-12-20

Taverner and Tearney face off for control of MI5. River and Louisa find themselves caught in the crossfire.

S03E06 Footprints 2023-12-27

Season finale. The Slow Horses fight for their lives. Lamb shares some devastating truths with Catherine.

S04E01 Identity Theft 2024-09-04

A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.

S04E02 A Stranger Comes to Town 2024-09-11

A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.

S04E03 Penny for Your Thoughts 2024-09-18

River is trapped in France. Back at Slough House, the Dogs have come for Lamb.

S04E04 Returns 2024-09-25

Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.

S04E05 Grave Danger 2024-10-02

Lamb questions David about France as River comes face to face with the enemy.

S04E06 Hello Goodbye 2024-10-09

Season finale. Impossible decisions are faced and sacrifices are made.

S05E01 Bad Dates 2025-09-24

A mass shooting rocks London, intensifying a testy mayoral race. Shirley believes one of the Slow Horses was the target of an attempted hit.

S05E02 Incommunicado 2025-10-01

Lamb intercepts an assassin. Taverner receives a key piece of intel about the Abbotsfield shooting.

S05E03 Tall Tales 2025-10-08

An act of sabotage grinds London to a halt. Taverner interrogates Roddy. Coe is convinced a destabilization strategy is at play.

S05E04 Missiles 2025-10-15

Flyte sets out to find Roddy's girlfriend. The gang is dispatched to two different campaign events to prevent another attack.

S05E05 Circus 2025-10-22

Lamb debriefs River and Coe. Roddy is pulled in to help decipher a piece of code as the destabilization strategy nears its final stage.

S05E06 Scars 2025-10-29

Season finale. It's up to the Slow Horses to stop Farouk's team from completing its mission in a final act of mass carnage.

TBA — Season 6, Episode 1 of Slow Horses. Aired 2026-09-16. Full plot synopsis not yet on file; see the show package for context.

TBA — Season 6, Episode 2 of Slow Horses. Aired 2026-09-23. Full plot synopsis not yet on file; see the show package for context.

TBA — Season 6, Episode 3 of Slow Horses. Aired 2026-09-30. Full plot synopsis not yet on file; see the show package for context.

TBA — Season 6, Episode 4 of Slow Horses. Aired 2026-10-07. Full plot synopsis not yet on file; see the show package for context.

TBA — Season 6, Episode 5 of Slow Horses. Aired 2026-10-14. Full plot synopsis not yet on file; see the show package for context.

S06E06 TBA 2026-10-21

TBA — Season 6, Episode 6 of Slow Horses. Aired 2026-10-21. Full plot synopsis not yet on file; see the show package for context.

Latest listed — From the desk: Latest listed episode “TBA” (2026-10-21). The catalog may still grow — this is not necessarily a series finale. Book-accurate grime pride and quiet awards campaigning.