Meanwhile, and Marcus Longridge attend a high-stakes meeting at the Glasshouse with Arkady Pashkin and James "Spider" Webb . The meeting quickly turns violent when Pashkin shoots Webb, leaving the agents trapped as the building begins to evacuate due to a "Code September" alert. Key Cast and Characters
Slow Horses is a British spy thriller adapted from Slough House novels. It follows a team of disgraced MI5 agents—relegated to a dumping ground department for their career-ending blunders—who find themselves at the center of dangerous conspiracies. Slow Horses S02E05 VOSTFR HDTV
The episode picks up with in a dire situation at an airfield in Upshott. He discovers that Alex Tropper , seemingly a quiet housewife, is actually a Russian sleeper agent. She subdues River and prepares to fly a plane laden with explosives toward the Glasshouse in London, where a major anti-capitalist protest is taking place. Meanwhile, and Marcus Longridge attend a high-stakes meeting
(Kristin Scott Thomas): The MI5 Deputy Director-General who must handle the "Code September" threat while managing political fallout. It follows a team of disgraced MI5 agents—relegated
(Gary Oldman): The irascible leader of Slough House who uncovers the forgery in Katinsky's defection papers.
In London, infiltrates the MI5 archives at Regent's Park to uncover the identity of the Russian spymaster. He realizes that Nikolai Katinsky , whom he previously dismissed as a minor player, is actually the mastermind who has been targeting Slough House for personal revenge.