Season 6

6 episodes · Sep 16, 2026

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 Videos

Clip · Official Sneak Peek

Featurette · An Inside Look

Featurette · Gary Oldman & Kristin Scott Thomas: Legendary Forces

Opening Credits · Opening Credits

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S6E1

Sep 16, 202648m

River braces for his grandfather’s funeral. Lamb looks into the death of an ex–Slow Horse.

S6E2

Sep 23, 202647m

The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.

S6E3

Sep 30, 202649m

Ex–Slow Horses return to the fold as assassins close in. Taverner faces the fallout of her TV interview.

S6E4

Oct 7, 202650m

Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.

S6E5

Oct 14, 202648m

River goes after Sid. Lamb sets his sights on Cantor. Taverner carries on with a treacherous deal.

S6E6

Oct 21, 202660m

Season finale. The safe house becomes unsafe as Lamb and Taverner finally join forces.