River Cartwright (Jack Lowden) narrowly avoids a disaster after misidentifying a threat at the Glasshouse, while Louisa Guy (Rosalind Eleazar) deals with the emotional and physical aftermath of Min Harper's murder earlier in the season. Critical Reception
The primary threat involving a potential "bomb" at the Glasshouse skyscraper is revealed to be a diversion. The true goal of the Russian mastermind, Nikolai Katinsky, was a cyber-attack aimed at depleting MI5's "slush funds" as an act of financial sabotage.
The success of the 2022 season solidified Slow Horses as a flagship title for Apple TV+, leading to the rapid production of subsequent seasons. "Slow Horses" Last Stop(2022)
Critics and audiences largely praised the finale for its balance of dark humor and genuine stakes.
The episode ends with Slough House remaining open, its "misfit" residents surviving another day despite the political machinations of Regent's Park (MI5 HQ). "Slow Horses" Old Scores (TV Episode 2022) - IMDb River Cartwright (Jack Lowden) narrowly avoids a disaster
The season finale centers on the fallout of the Russian plot to stage a "revenge" mission against MI5.
Reviewers on IMDb gave the episode a 7.5/10 , noting that while it delivered strong emotional beats and resolved the season's arcs, it felt slightly more deliberate in pace compared to the high-intensity penultimate episode. The success of the 2022 season solidified Slow
Jackson Lamb tracks Katinsky to a remote location. In their final confrontation, Katinsky reveals his personal vendetta: he blames Lamb for the death of his former colleague. Rather than being captured, Katinsky chooses to take his own life after Lamb exposes the futility of his mission.