Slow Horses Season 6 Reviews Earn High Praise

Critically acclaimed spy thriller "Slow Horses" is garnering strong reviews ahead of its sixth season premiere on Apple TV+, scheduled for September 16, 2026. Critics are highlighting the latest installment for its sharp writing, compelling storytelling, and continued character development, with many suggesting it ranks among the series' strongest offerings to date. The new season, adapted from Mick Herron's "Slough House" novels, sees the dysfunctional team of MI5 agents led by Jackson Lamb, portrayed by Gary Oldman, facing a new threat. For the first time, the six-episode season adapts two novels, "Joe Country" and "Slough House," a departure from the show's previous structure of adapting one book per season. This season also marks a change in leadership behind the scenes, with Gaby Chiappe taking over as head writer from longtime showrunner Will Smith. Reviews indicate that the series maintains its signature blend of dark humor, high-octane action, and intricate drama. A central plot point involves the Slough House operatives being targeted by assassins, leading to significant casualties among former and current agents.