Slow Horses: Season 6
- 2026
- 6 episodes
In season six, the Slow Horses are on the run as Diana Taverner embroils them all in a fatally high-stakes game of retaliation and revenge.
Season 6 of Slow Horses premiered on September 16, 2026 and has 6 episodes, from "Circle of Life" to "Judgement Day".
Where to watch Slow Horses
In the United States, you can stream Slow Horses on Apple TV. It is also free on Amazon Prime Video. It is on streaming services in 86 countries.
Episodes
Episode 1Circle of LifeAired September 16, 2026
River braces for his grandfather's funeral. Lamb looks into the death of an ex–Slow Horse.
Guest stars
- Paul Higgins Struan Loy
- Samuel West Peter Judd
- Bally Gill Agent Singh
- Ruth Bradley Emma Flyte
- Kyle Soller Jim
- MyAnna Buring Jane
- Harry Lloyd Damien Cantor
- Lalla Saadi Cashier
Episode 2Daddy IssuesAired September 23, 2026
The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.
Guest stars
- Olivia Cooke Sidonie 'Sid' Baker
- Samuel West Peter Judd
- Naomi Wirthner Molly Doran
- Ruth Bradley Emma Flyte
- Joanna Scanlan Moira Tregorian
- Kyle Soller Jim
- MyAnna Buring Jane
- Harry Lloyd Damien Cantor
Episode 3ResurrectionAired September 30, 2026
Ex–Slow Horses return to the fold as assassins close in. Taverner faces the fallout of her TV interview.
Guest stars
- Rosalind Eleazar Louisa Guy
- Olivia Cooke Sidonie 'Sid' Baker
- Ruth Bradley Emma Flyte
- Joanna Scanlan Moira Tregorian
- Turlough Convery Dancer Blaine
- Kyle Soller Jim
- MyAnna Buring Jane
- Lenny Rush Reece Nesmith
Episode 4Lost & FoundAirs October 7, 2026
Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.
Episode 5SayonaraAirs October 14, 2026
River goes after Sid. Lamb sets his sights on Cantor. Taverner carries on with a treacherous deal.
Episode 6Judgement DayAirs October 21, 2026
The safe house becomes unsafe as Lamb and Taverner finally join forces.
