Season 6 finds the disgraced MI5 agents of Slough House on the run after Diana Taverner draws them into a dangerous game of retaliation and revenge. What begins as a covert intelligence operation quickly becomes a personal crisis, forcing Jackson Lamb and his team to confront enemies inside and outside the service. As the conspiracy expands, the Slow Horses must protect one another while uncovering who is manipulating the operation.
The season is adapted from Mick Herron’s novels Joe Country and Slough House.
Title: Slow Horses
Year: 2022–present
Type: TV Series
Country: United Kingdom
Language: English
Creator: Will Smith
Based on: The Slough House novels by Mick Herron
Genre: Spy Thriller, Drama, Dark Comedy
Season: 6
Episodes: 6
Streaming: Apple TV
Premiere date: September 16, 2026
Finale: October 21, 2026