Series synopsis
Slow Horses is a British crime drama comedy television series that premiered on Apple TV on April 1, 2022. It stars Gary Oldman, Jack Lowden, Kristin Scott Thomas and Hugo Weaving.
Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
Premise
Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
Premise: Drinker. Thinker. Rebel. Spy.
Cast and characters
Leading cast
- Gary Oldman as Jackson Lamb
- Jack Lowden as River Cartwright
- Kristin Scott Thomas as Diana Taverner
- Hugo Weaving as Frank Harkness
- Jonathan Pryce as David Cartwright
- Saskia Reeves as Catherine Standish
- Christopher Chung as Roddy Ho
- Rosalind Eleazar as Louisa Guy
Supporting cast
- Aimee-Ffion Edwards as Shirley Dander
Guest cast
- Sam Hazeldine as Moe
- Miltos Yerolemou as Theo Makris
- Kurt Egyiawan as Roger Barrowby
- Paul Higgins as Struan Loy
- Joey Ansah as Agent Pierce
- Julie Atherton as Melanie
- Steven Waddington as Jed Moody
- Freddie Fox as Spider Webb
- Olivia Cooke as Sidonie 'Sid' Baker
- Lucy Ford as Liz Montague
- Miles Yekinni as Lead Dog
- Bronwyn James as Young Mum
Episodes
This series spans 6 seasons with 36 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 6 | April 1, 2022 | April 29, 2022 |
| Season 2 | 6 | December 2, 2022 | December 30, 2022 |
| Season 3 | 6 | November 29, 2023 | December 27, 2023 |
| Season 4 | 6 | September 4, 2024 | October 9, 2024 |
| Season 5 | 6 | September 24, 2025 | October 29, 2025 |
| Season 6 | 6 | September 16, 2026 | October 21, 2026 |
| Episode | Title | Air date |
|---|---|---|
| 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. |
April 1, 2022 |
| 2 |
Work Drinks River and Sid join forces. A misfired gun has dire consequences. |
April 1, 2022 |
| 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. |
April 8, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
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. |
December 2, 2022 |
| 2 |
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. |
December 2, 2022 |
| 3 |
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. |
December 9, 2022 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
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. |
November 29, 2023 |
| 2 |
Hard Lessons River has to steal something out of the Park to save a life. Lamb realizes a stranger game is afoot. |
November 29, 2023 |
| 3 |
Negotiating with Tigers Marcus and Shirley face Lamb's wrath. River discovers revenge is a dish best served cold. |
December 6, 2023 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Identity Theft A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit. |
September 4, 2024 |
| 2 |
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. |
September 11, 2024 |
| 3 |
Penny for Your Thoughts River is trapped in France. Back at Slough House, the Dogs have come for Lamb. |
September 18, 2024 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
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. |
September 24, 2025 |
| 2 |
Incommunicado Lamb intercepts an assassin. Taverner receives a key piece of intel about the Abbotsfield shooting. |
October 1, 2025 |
| 3 |
Tall Tales An act of sabotage grinds London to a halt. Taverner interrogates Roddy. Coe is convinced a destabilization strategy is at play. |
October 8, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 | Circle of Life | September 16, 2026 |
| 2 | Daddy Issues | September 23, 2026 |
| 3 | Resurrection | September 30, 2026 |
Production
Release
| Original network/platform | Apple TV |
|---|---|
| First aired | April 1, 2022 |
| Last aired | October 29, 2025 |
| Status | Returning Series |
| Schedule | Wednesday |