Slow Horses Season 6 Episode 5 photos preview “Sayonara,” arriving Wednesday, October 14, 2026, on Apple TV. River goes after Sid, Jackson Lamb turns his attention to Cantor, and Diana Taverner continues with a treacherous deal as the season reaches its penultimate episode.
Gary Oldman returns as Lamb, with Jack Lowden as River Cartwright and Olivia Cooke as Sid Baker. Kristin Scott Thomas plays Taverner, whose negotiations remain a dangerous part of the story unfolding around Slough House.
“Sayonara” brings River’s pursuit and Lamb’s investigation into focus, while Taverner presses ahead with her own arrangement. With just two episodes left in the six-episode season, those three threads carry the story toward its October 21 finale.
For the events leading into “Sayonara,” read Seat42F’s Season 6 Episode 4 recap and ending explained. That article contains full spoilers for “Lost and Found.” You can also revisit the Episode 4 photos.
Slow Horses Season 6 Episode 5 Synopsis
River goes after Sid. Lamb sets his sights on Cantor. Taverner carries on with a treacherous deal.
Slow Horses Season 6 Episode 5 Photos: “Sayonara”
When Does Slow Horses Season 6 Episode 5 Premiere?
“Sayonara” premieres Wednesday, October 14, 2026, on Apple TV. The first four episodes of Season 6 are available to stream now, and the season finale follows Wednesday, October 21. Visit the official episode page for streaming details and Apple’s episode and image guide for more from the series.
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Thomas Miller is the founder and Editor-in-Chief of Seat42F, covering television, movies and streaming entertainment. He launched Seat42F in 2007 and has spent nearly two decades covering the entertainment industry.
