[REVISION HISTORY]

Slow Horses season 6 plot developments and season 7 news

Updated 31 times since CLSTR started tracking revisions of this situation.

What changed

2026-10-24 01:22 UTC → 2026-10-25 19:12 UTC · added ~~removed~~

Apple TV+ premiered the sixth season of the espionage drama ‘Slow Horses’ on September 16, 2026. This installment adapts Mick Herron’s novels ‘Joe Country’ and ‘Slough House’, following MI5 agents from Slough House as they go on the run following a mysterious erasure from the MI5 archives. The season features the return of Olivia Cooke as Sid Baker and Hugo Weaving as Frank Harkness. Following the deaths of former MI5 head David Cartwright and former members Struan Loy and Kay White, the investigation into these fatalities intensifies. In the third episode, ‘Resurrection’, it is revealed that Sid Baker is alive, having been presumed dead since the first ~~season; she explains her disappearance was necessary for continued MI5 involvement.~~ season. During this episode, agents Shirley, Catherine, and Louisa rescue Moira Tregorian after a failed assassination attempt by Jim and Jane. Louisa Guy also returns to Slough House after working in the corporate sector. As the conspiracy expands, Jackson Lamb and Roddy investigate Reece Nesmith, uncovering links to stolen MI5 files and political fallout involving Diana Taverner. ~~In the~~ The fourth episode, ‘Lost and Found’, ~~the situation escalates after~~ sees Lamb ~~discovers team files were stolen from the Park. He initiates~~ initiate the ‘Blake’s Grave’ ~~protocol, requiring agents to go dark and convene at a safehouse.~~ protocol after discovering stolen files. During a ~~tense sequence,~~ confrontation with GRU-affiliated assassins Jim and Jane, J.K. Coe engages in a fatal knife fight with ~~the GRU-affiliated assassin Jim. The episode concludes with~~ Jim, resulting in Coe’s apparent death and the abduction of Sid ~~Baker, leaving River Cartwright to manage the aftermath.~~ Baker. The season ~~finale, ‘Judgment Day’,~~ concludes with the fifth episode, ‘Sayonara’, and the finale, ‘Judgment Day’. The finale features an attack by Frank Harkness on Diana Taverner’s refuge and the death of Emma Flyte, a major ~~cliffhanger.~~ turning point for Roddy Ho. The season ends with River Cartwright ~~appears~~ appearing to be poisoned by a nerve agent, likely Novichok, after contact with a contaminated ~~crowbar at~~ crowbar, leaving his ~~grandfather's house, collapsing just as he is about to reunite with Sid Baker.~~ future uncertain. Following the season's success, Apple TV has renewed the series for seasons 7 and 8.

Versions

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.