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Episodes
Cast
Gary Oldman
Jackson Lamb
Jack Lowden
River Cartwright
Kristin Scott Thomas
Diana Taverner
Saskia Reeves
Catherine Standish
Christopher Chung
Roddy Ho
Aimee-Ffion Edwards
Shirley Dander
1Last Stop
Dec 2, 202247 min
Jackson Lamb is on high alert after a former spy is found dead. Min and Louisa are tempted by an offer from outside Slough House.
2From Upshott with Love
Dec 2, 202252 min
Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.
3Drinking Games
Dec 9, 202256 min
River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.
4Cicada
Dec 16, 202249 min
Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.
5Boardroom Politics
Dec 23, 202245 min
Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
6Old Scores
Dec 30, 202249 min
Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.