Slow Horses

2022-04-01 · 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.

S01 E01 · 2022-04-01 · 57 min

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.

S01 E02 · 2022-04-01 · 52 min

Work Drinks

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

S01 E03 · 2022-04-08 · 46 min

Bad Tradecraft

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

S01 E04 · 2022-04-15 · 47 min

Visiting Hours

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

S01 E05 · 2022-04-22 · 46 min

Fiasco

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

S01 E06 · 2022-04-29 · 57 min

Follies

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

2022-12-02 · Long-buried Cold War secrets emerge which threaten to bring carnage to the streets of London. When a liaison with Russian villains takes a fatal turn, our hapless heroes must overcome their individual failings and raise their spy game in a race to prevent a catastrophic incident.

S02 E01 · 2022-12-02 · 47 min

Last Stop

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.

S02 E02 · 2022-12-02 · 52 min

From Upshott with Love

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

S02 E03 · 2022-12-09 · 56 min

Drinking Games

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

S02 E04 · 2022-12-16 · 49 min

Cicada

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

S02 E05 · 2022-12-23 · 45 min

Boardroom Politics

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

S02 E06 · 2022-12-30 · 49 min

Old Scores

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

2023-11-29 · A romantic liaison in Istanbul threatens to expose a buried MI5 secret in London. When Jackson Lamb and his team of misfits are dragged into the fight, they find themselves caught in a conspiracy that threatens the future not just of Slough House but of MI5 itself.

S03 E01 · 2023-11-29 · 47 min

Strange Games

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

S03 E02 · 2023-11-29 · 44 min

Hard Lessons

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

S03 E03 · 2023-12-06 · 47 min

Negotiating with Tigers

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

S03 E04 · 2023-12-13 · 48 min

Uninvited Guests

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

S03 E05 · 2023-12-20 · 44 min

Cleaning Up

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

S03 E06 · 2023-12-27 · 48 min

Footprints

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

2024-09-04 · In season 4, a bombing detonates personal secrets, rocking Slough House's already unstable foundations.

S04 E01 · 2024-09-04 · 47 min

Identity Theft

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

S04 E02 · 2024-09-11 · 49 min

A Stranger Comes to Town

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

S04 E03 · 2024-09-18 · 49 min

Penny for Your Thoughts

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

S04 E04 · 2024-09-25 · 46 min

Returns

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

S04 E05 · 2024-10-02 · 43 min

Grave Danger

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

S04 E06 · 2024-10-09 · 56 min

Hello Goodbye

Impossible decisions are faced and sacrifices are made.

2025-09-24 · In season five, everyone is suspicious when resident tech nerd Roddy Ho has a glamorous new girlfriend. When a series of increasingly bizarre events occur across the city, it falls to the Slow Horses to work out how everything is connected. After all, Lamb knows that in the world of espionage, the London Rules — cover your back — always apply.

S05 E01 · 2025-09-24 · 46 min

Bad Dates

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

S05 E02 · 2025-10-01 · 48 min

Incommunicado

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

S05 E03 · 2025-10-08 · 40 min

Tall Tales

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

S05 E04 · 2025-10-15 · 40 min

Missiles

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

S05 E05 · 2025-10-22 · 45 min

Circus

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

S05 E06 · 2025-10-29 · 52 min

Scars

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