Slow Horses Season 6 Review – A Shift in Tone and New Challenges
Published · Updated
Cited: The New York Times, The Guardian, Vulture
TL;DR
Slow Horses season 6 premieres with a darker tone and new showrunner, receiving mixed reviews for its shift away from sharp comedy.
Why now
The season 6 premiere dropped on Apple TV+ on September 16, 2026, sparking debate among critics and fans about the show's direction.
Agree / conflict
Critics agree the cast is strong but conflict over whether the show has lost its creative spark.
Takeaway
Season 6 is a more conventional thriller; longtime fans may miss the biting humor, but the performances remain top-notch.
The sixth season of Slow Horses opens with River Cartwright grieving his grandfather's death, a rare moment of sincerity for the cynical spy series. New showrunner Gaby Chiappe shifts the tone toward a more straightforward thriller, as former Slough House agents are targeted by mysterious killers. The Guardian's review laments the loss of creator Will Smith's sharp wit, calling the season harder to enjoy, while Vulture praises the premiere's emotional weight and strong performances from Gary Oldman and Jack Lowden. Kristin Scott Thomas's Diana Taverner takes center stage as the new head of MI5, adding political intrigue. The season introduces new villains and brings back familiar faces, but some critics feel the show is running out of ideas. Despite the mixed reception, Slow Horses remains a slick and confident production, anchored by its stellar cast.
FAQ
Who is the new showrunner for Slow Horses season 6?
Gaby Chiappe takes over as lead writer, replacing series creator Will Smith.
What is the main plot of season 6?
The season begins with River Cartwright grieving his grandfather's death, while a killer targets former Slough House agents. The slow horses go on the run.
How has the tone changed in season 6?
The tone is more somber and conventional, with less of the sharp comic banter that defined earlier seasons.
Are there any returning characters?
Yes, Hugo Weaving returns as Frank Harkness, and other familiar faces like Louisa, Moira, and Struan Loy appear.
What do critics say about the season?
Reception is mixed: The Guardian finds it less enjoyable, while Vulture gives the premiere 4 stars, praising its emotional depth.
Sources
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