After an action-packed episode and another heartbreaking loss for the Slough House team, Slow Horses Season 6’s finale delivered an unexpectedly agonizing gut-punch in its final minute that will leave viewers asking what the heck just happened and fearing for the fate of a fan-favorite character.
asserted
that → deliver → character
Despite losing the heroic Coe (Tom Brooke) and Flyte (Ruth Bradley) in battle, Lamb (Sir Gary Oldman), River (Jack Lowden), Louisa (Rosalind Eleazar), Roddy (Christopher Chung), Standish (Saskia Reeves), Shirley (Aimee-Ffion Edwards), Moira (Joanna Scanlan), and even Reece (Lenny Rush) survive Harkness (Hugo Weaving) and Russian assassins Jim (Kyle Soller) and Jane (MyAnna Buring).
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Lamb → lose → Harkness
After Slough House resumes operations and the Slow Horses meet at their usual spot to honor their fallen joes, viewers wrongfully assume everyone is in the clear.
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everyone → resume → clear
But we almost forgot about someone: Sid (Olivia Cooke).
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we → forget → someone
With minutes left in Season 6’s finale, Standish tells River that his grandad’s neighbor noticed a light on in his house for a few days.
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light → leave → days
Before she finishes explaining, River understands, hops in the car, and drives to David’s house, where a single light is on upstairs, a nod to Sid’s promise that she’d leave the light on for him like his grandad used to.
asserted
grandad → finish → him
When River enters, he hears the shower upstairs, so he plans his romantic surprise.
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he → enter → surprise
As Nick Drake’s “One Of These Things First” plays, he races to make tea, moves the crowbar he left on the counter earlier, and decides to pop open a bottle of wine.
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he → play → wine
As River tries to perfectly arrange the wine glasses, light a candle, and pop the cork, however, his right hand noticeably bothers him.
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hand → try → him
He starts panting, gasping for air, wheezing.
asserted
He → start → air
He grabs his phone and tries to call for help, but collapses before he’s able to.
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he → grab → help
The final shot of Season 6 is his still boot on the ground, leaving fans to wonder, “Is River dead?”
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River → leave → fans
So what happened to River in Slow Horses? Need Slow Horses Season 6’s ending explained?
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ending → happen → Horses
Does River die in the Slow Horses books?
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River → die → books
Or is Jack Lowden leaving Slow Horses?
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Lowden → leave → Horses
Here’s everything we know.
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we → ’ → ?
What Happened To River In Slow Horses? And What Is Novichok In Slow Horses?
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Novichok → happen → Horses
Slow Horses Season 6 Ending Explained:
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Ending → explain → ?
While we’ll have to wait and see which path Slow Horses takes, thanks to the books, we know that a Russian nerve agent, Novichok, poisoned River.
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agent → have → River
As Taverner confirmed earlier in the season, “We responded to nerve attacks on British soil with an action in Russia.”
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We → confirm → Russia
And from the looks of the finale’s final minutes, the nerve agent transferred onto River’s right hand when he grabbed the crowbar, which suggests that Jim or Jane may have planted it earlier in the episode, hoping someone would grab the makeshift weapon to defend themselves.
uncertain
someone → transfer → themselves
How David’s house was hit, and whether the poison was meant for River, Sid, or both, remains unclear.
uncertain
poison → hit → River
The big question now is: Does River die in the Slow Horses books?
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River → die → books
So if you don’t want to know, stop reading now.
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you → want → ?
Does River Die In Slow Horses Books?
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River → die → Books
Slow Horses has stayed pretty true to the heart of Mick Herron’s source material for major storylines — and even character deaths — thus far, and thankfully in Book 8, Bad Actors, River survives being poisoned!
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River → stay → Book
Sid finds him in time, and he spends much of the book recovering on medical leave, though he returns in Book 9, Clown Town.
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he → find → Book
So we’re hoping the same happens in the show!
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same → hop → show
Slow Horses Season 6 Writer And EP Weighs In
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Writer → weigh → ?
As always, storylines can change in text-to-screen adaptations.
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storylines → change → adaptations
So we don’t know if River will die in the show or not.
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River → know → show
But here’s what Season 6 writer/EP Gaby Chiappe had to say in an interview with TV Insider.
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Chiappe → ’ → Insider
“We don’t know what’s going to happen to him.
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what → know → him
We know that Novichok has been named, and we know that it has been used within the episode, and we suspect that that’s what it is.
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it → know → episode
And people survive it, but people also die from it.
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people → survive → it
So we don’t know what’s going to happen,” Chiappe said.
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Chiappe → know → ?
“You can hear that Sid’s having a bath upstairs.
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Sid → hear → bath
You can hear the water running.
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water → hear → ?
So at some point Sid is going to come down.
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Sid → go → point
Is she going to come down soon enough to be able to help River?
asserted
she → go → River
…and 24 more, not listed.