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Slow Horses poster

Slow Horses

"Drinker. Thinker. Rebel. Spy."

8.0
5 seasons
30 episodes
Returning Series
Crime
Drama
Comedy

Plot Summary

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.

First Aired:April 1, 2022
Last Aired:October 29, 2025
Episode Runtime:Unknown
Networks:
Apple TV

Cast & Characters

Where to watch free (US)

No free providers found in US.

Seasons (5)

Season 1
7.7

Season 1

6 episodes

Aired: 2022

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.

Season 2
8.0

Season 2

6 episodes

Aired: 2022

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.

Season 3
8.2

Season 3

6 episodes

Aired: 2023

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.

Season 4
8.3

Season 4

6 episodes

Aired: 2024

In season 4, a bombing detonates personal secrets, rocking Slough House's already unstable foundations.

Season 5
8.3

Season 5

6 episodes

Aired: 2025

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.

Production

See-Saw Films

Flying Studio Pictures

Sony Pictures Television