With Its Sixth Season, Slow Horses Remains One Of The Best Things To Happen To Television

Unlike anything else on TV, Slow Horses expertly blends action, intrigue and wit for an unrelenting spy thriller.

Someone’s coming for the Slow Horses, and our heroes don’t have plot armor.

In our first review of Apple TV’s smash spy hit Slow Horses more than two and a half years ago, we called it the best thriller on TV and praised Gary Oldman’s turn as the surly codger Jackson Lamb, who captains an office of MI5’s worst screw-ups and delights in tormenting them.

Now in its sixth season, the espionage drama has never been better.

The show’s writers have perfected the art of cranking up tension while knowing when to cut it with dry humor, whether it’s Lamb’s biting sarcasm, agent River Cartwright’s annoying earnestness or the delusional confidence of Roddy Ho, the Slow Horses’ tech specialist who believes women are lining up to get a crack at him.

The last two seasons have seen the Horses dismantle a terror ring, get pulled into the ugliness of national politics, and face down an extraordinary manipulator with a serious grudge against the British.

Two business professionals with earpieces standing with arms crossed, looking serious in a corporate setting.
James Callis and Kristen Scott Thomas play MI5’s bosses in the UK spy thriller. Credit: Apple TV

The sixth season is the deadliest yet, with an unidentified foe from the past systematically assassinating anyone who’s ever worked at Slough House, the Horses’ dilapidated, grubby headquarters.

They lock one former Horse in a shipping container full of accelerant and burn him alive, drown another in London’s canals, and stage the death of a third with a lethal gas before Lamb and his “losers” (his words) realize they’ve got targets on their backs. And that’s just the very beginning of the season.

All three assassinations are meant to look like accidents, but Lamb tells the Horses to go to ground. The show’s spies have occasionally reminded the audience there are two sets of rules: under Moscow rules, watch your back. Under London rules, cover your arse.

Lamb fears he and his agents are the sacrifice in a panicked MI5 attempt at arse-covering, meaning Moscow and London rules are now in play. The Slow Horses will get no help from “the park,” MI5’s headquarters, nor from any of its brass, who are likely in on the plot to stab Lamb and his spies in the back.

A man standing in a field of tall grass under a partly cloudy sky, wearing a light-colored coat and a striped shirt with a tie.
Oldman’s Jackson Lamb, whose rumpled, hygienically challenged appearance masks the sharp mind of a Cold War veteran spy always several steps ahead of everyone else. Credit: Apple TV

No fat or filler

At a time when it’s unfortunately common for TV shows to take two or even three-year breaks between seasons (with Netfix taking more than five years between installments of one of its most popular shows), Slow Horses releases a new season like clockwork every 11 or 12 months.

The showrunners accomplish this in part because they’re constantly writing, even while filming, and because with six hour-long episodes per season, there is no filler. Things move fast, plots ramp up quickly, and we learn about the characters not through leisurely exposition but in the most natural way, by seeing how they react and pull together when things are at their worst.

Oldman’s Lamb is the role of a lifetime and the veteran actor is at his best here, only occasionally letting his vulgar, derisive mask slip to show paternalistic care for the agents under his wing. Not all of them are the screw-ups they’re portrayed as, and some are actually excellent spies who have been railroaded or sidelined due to character issues.

Five individuals gathered in a room, focusing on a smartphone screen. Two women are examining the phone closely, while a man stands nearby. The setting is cluttered, with various drinks and food items on a table.
Shirley, center, shows the other Slow Horses video proof that an assassination squad is after one of their own. Credit: Apple TV

Cartwright (Jack Lowden), the most prominent of them, unknowingly did too good of a job when tailing MI5’s second-in-command during a training exercise and caught her debriefing an off-the-books agent who was tasked with burying one of the agency’s worst screw-ups. His reward was being set up to fail in a major training exercise and a subsequent exile to Slough House.

Shirley (Aimee-Ffion Edwards) is almost as abrasive as Lamb and has a drug problem, but is also an extremely capable agent, a crack shot and, in the words of Lamb, “a brave little hobbit” who routinely charges into the most dangerous situations despite her tiny 5’1″ frame. She’s also the first to realize a plot against MI5 in one season and is repeatedly dismissed as paranoid and crazy before reality forces the brass to acknowledge they have a serious problem on their hands.

A woman with wet hair staring intently at the camera while wearing a light-colored sweater with black stripes. The background features blurred office elements and holiday decorations.
A “brave little hobbit”: Aimee-Ffion Edwards plays the Welsh spy Shirley Dander. Credit: AppleTV

Catherine Standish (Saskia Reeves) is routinely overlooked because of her past as an alcoholic, but proves to be a quick thinker and uses her useless reputation as camouflage to devastating effect, while the mysterious Coe (Tom Brooke) is understated and hides a sharp mind.

Then there’s Roddy Ho, who lives in a universe of his own creation, one where he’s absolute catnip to women, a hacker of worldwide repute and a legend in the spy world. Ho incessantly invents flattering nicknames for himself — the Rodzilla, the HoDron Collider, the Hot Rod, the Ramrod, “Roddy by name, Ho by nature” — bragging to one MI5 bigwig that he has “many nom de guerre.”

“I am mythical, historical and futuristical!” he says in one scene, flexing his biceps and bragging that he’s been called a dragonslayer and the True King of Gondor.

A man flexing his arm muscles while wearing a black t-shirt, set in a dimly lit room with industrial elements.
Roddy Ho, the Slow Horses’ tech specialist, lives in a universe of his own creation. Credit: Apple TV

In a lesser actor’s hands, the performance would be over the top to the point of pulling viewers out of the narrative, but Christopher Chung imbues Ho with off-the-scale confidence so he comes off as a man-child who’s been telling himself legends of his own invention for so long that he can’t distinguish between reality and fantasy.

It makes for rich comedic material even in the most tense situations. Ho can go from cowering in a bathroom while yelling “I don’t want to die!” to bragging about his martial prowess in the blink of an eye, and somehow it works.

Both the show’s humor and spy narratives are top notch, and we get plenty of action worthy of Hollywood blockbusters, with spectacular set pieces, brutal fights and explosions enough to satisfy even Michael Bay.

American audiences haven’t fully caught on, and I expect that’s because we generally don’t do the kind of ultra-dry humor that is a trademark of the UK’s best productions. But I’d advise anyone to give it a shot. This isn’t a show you watch with one eye on your smartphone. It demands your full attention, and it rewards you in equal measure.

Slow Horses is currently airing its sixth season on Apple TV, with a seventh already filmed and slated for release next year.

Header image of River Cartwright (Jack Lowden) credit: Apple TV

In Slow Horses, MI5’s Rejects Become Heroes

TV thrillers don’t get any better than this.

There’s a scene in the first season of Slow Horses when Gary Oldman, in the role of a lifetime as MI5 supervisor Jackson Lamb, gathers his team as they’re being hunted.

“I don’t normally do these kind of speeches,” he says with an exasperated sigh, “but this feels like a big moment and if it all turns to shit, I might not see any of you again.”

He looks each of his agents in the eye, their fear reflected back at him, and sniffs.

“You’re f—ing useless, the lot of you! Working with you has been the lowest point in a disappointing career,” he says before barking at one of the young agents to accompany him and warning the rest not to get themselves killed.

Oldman is spectacular as Lamb, the gaseous, miserable MI5 veteran who captains Slough House, a purgatory where the agency’s worst agents are sent to waste away the remainder of their careers after humiliating themselves, usually in novel and cringe-worthy ways.

One agent was exiled after forgetting a disc with sensitive information on a train. Another was an alcoholic who didn’t notice her supervisor was feeding information to the Russians for years, while a third was banished to Slough House simply for being an insufferable jerk.

Gary Oldman as Jackson Lamb
Gary Oldman as Jackson Lamb, who oversees the purgatory for disgraced MI5 agents known as Slough House.

Regardless of the reasons, each of the agents at Slough House is determined to get back into the good graces of agency brass by redeeming themselves in service to king and country.

Or, as Mick Jagger puts it in the show’s catchy theme song, they want “to dance with the big boys again.”

To do that they must endure consistently brutal needling from Lamb and navigate the most mundane, least glamorous assignments. If a job is a lose-lose proposition, MI5 hands it over to the rejects of Slough House — the eponymous Slow Horses — figuring their already stained reputations can’t get much worse.

So when a secretive MI5 plot goes off the rails and the agency’s leaders need someone to take the fall, they serve up the Horses.

There’s just one problem: Lamb, for all his misery, disgusting habits and bone-dry British humor, is an exceptional agent with old-school skills, and the Horses themselves aren’t necessarily incompetent. Several were promising young agents of great skill who got railroaded or were collateral damage in political warfare.

When MI5 second-in-command Diana “Lady Di” Taverner (an icy Kristen Scott Thomas) decides the disgraced agents will be blamed for a major agency blunder, Lamb is aghast and warns her he won’t accept it.

“They’re losers,” he says, “but they’re my losers.”

When we meet them for the first time they’ve already been tagged for sacrifice to the media and public, but don’t know it yet.

And when it turns out that the case has real consequences — a young man will be beheaded on a live stream by extremists if their demands aren’t met — the Slow Horses, led by the acid-tongued Lamb, use every trick at their disposal in an attempt to rescue the innocent victim.

slowhorsesriversid
Jack Lowden as River Cartwright, left, and Olivia Cooke as Sid Barrett, center, disgraced agents of MI5. Credit: Apple TV

Slow Horses, like Luther and similar UK crime dramas, is a different animal than the bland, formulaic cop shows we’re accustomed to on this side of the pond.

Whether it’s Law and Order, the many incarnations of CSI and NCIS or shows like Chicago PD, the audience always knows a few things for sure: The case will be solved and the bad guys apprehended by the end of the hour, the police will be righteous and earnest, and favorite characters will never find themselves in real danger. Mariska Hargitay’s character will live another day to continue on in her third decade fighting crime. Chicago’s tough-talking detective Hank might be rough around the edges and bend a few rules, but he’s fundamentally a good guy on the side of justice.

The Slow Horses have no such pretenses, nor plot armor. They’re deeply flawed people and they’re not immune to bullets or bad luck.

The result humanizes the agents in a way other spy thrillers and crime shows never manage to accomplish with their own characters. When one of the Horses takes a bullet from a Russian agent or risks life and limb to protect the British public, there’s a real sense of tension because the show makes it clear not everyone survives.

The show’s writers also know when to dial it back with moments of genuine humor, separating Slow Horses from contemporary spy thrillers like Homeland, which — with apologies to Claire Danes — always took itself seriously.

Slow Horses: Taverner and Lamb
Kristen Scott Thomas as Diana “Lady Di” Taverner, MI5’s ruthless second-in-command, with Oldman as Jackson Lamb. Credit: Apple TV

As for Jagger, he signed on to write the show’s theme song with composer Daniel Pemberton because he’s a fan of the original Slow Horses novels by Mick Herron. While writing the lyrics, he said, the phrase “strange game” kept coming back to him. That became the title of the theme song and its primary hook. It’s an apt description of what MI5 agents are involved in as operators for a domestic agency that, unlike the American FBI, has the green light to involve itself in extensive subterfuge on home soil.

Slow Horses just finished airing its third season. A fourth has already been filmed and completed, a fifth is in production and a sixth season is currently in the adaptation/writing phase.

A production that runs like a finely tuned engine is appropriate for the series: each season is a taut six episodes, meaning there’s no filler and the tension does not let up on the gas pedal. With eight books and counting, there’s plenty more material to adapt, and if the response so far has been any indication — universal praise by critics and audiences in rare agreement — we’ll get to see every one of them make it to the small screen.

Title: Slow Horses
Network: Streaming (Apple TV)
Format: Series
Release date: April 2022 (season 1), December 2022 (season 2), November 2023 (season 3), TBA 2024 (season 4)

Verdict: All the paws up! When it comes to crime and spy thrillers it doesn’t get any better than this. Slow Horses is tense and humorous in precisely the right proportions, knows when not to take itself too seriously, and benefits from an incredibly talented cast to match its excellent writing. We highly recommend this show.