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.
Sep 16, 2026
River braces for his grandfather's funeral. Lamb looks into the death of an ex–Slow Horse.
Sep 23, 2026
The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.
Sep 30, 2026
Ex–Slow Horses return to the fold as assassins close in. Taverner faces the fallout of her TV interview.
Oct 7, 2026
Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.
Oct 14, 2026
River goes after Sid. Lamb sets his sights on Cantor. Taverner carries on with a treacherous deal.
Oct 21, 2026
The safe house becomes unsafe as Lamb and Taverner finally join forces.
