Long-buried Cold War secrets emerge which threaten to bring carnage to the streets of London. When a liaison with Russian villains takes a fatal turn, our hapless heroes must overcome their individual failings and raise their spy game in a race to prevent a catastrophic incident.
Episodes
1. Last Stop
Dec 2, 2022 44m 7.9Jackson Lamb is on high alert after a former spy is found dead. Min and Louisa are tempted by an offer from outside Slough House.
2. From Upshott with Love
Dec 2, 2022 49m 8.0Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.
3. Drinking Games
Dec 9, 2022 53m 8.1River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.
4. Cicada
Dec 16, 2022 46m 7.8Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.
5. Boardroom Politics
Dec 23, 2022 42m 8.3Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
6. Old Scores
Dec 30, 2022 46m 8.4Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.