Episodes
Failure's Contagious
River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.
Work Drinks
River and Sid join forces. A misfired gun has dire consequences.
Bad Tradecraft
Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.
Visiting Hours
Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.
Fiasco
The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.
Follies
Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.
Last Stop
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.
From Upshott with Love
Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.
Drinking Games
River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.
Cicada
Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.
Boardroom Politics
Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
Old Scores
Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.
Strange Games
A romantic relationship in Istanbul ends badly. Lamb hits the panic button when one of his Slow Horses fails to show up for work.
Hard Lessons
River has to steal something out of the Park to save a life. Lamb realizes a stranger game is afoot.
Negotiating with Tigers
Marcus and Shirley face Lamb's wrath. River discovers revenge is a dish best served cold.
Uninvited Guests
Tearney makes a bold move. The Slow Horses assist the Tiger Team, unaware of their hidden agenda. Lamb and Ho take a road trip.
Cleaning Up
Taverner and Tearney face off for control of MI5. River and Louisa find themselves caught in the crossfire.
Footprints
The Slow Horses fight for their lives. Lamb shares some devastating truths with Catherine.
Identity Theft
A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.
A Stranger Comes to Town
A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.
Penny for Your Thoughts
River is trapped in France. Back at Slough House, the Dogs have come for Lamb.
Returns
Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
Grave Danger
Lamb questions David about France as River comes face to face with the enemy.
Hello Goodbye
Impossible decisions are faced and sacrifices are made.
Bad Dates
A mass shooting rocks London, intensifying a testy mayoral race. Shirley believes one of the Slow Horses was the target of an attempted hit.
Incommunicado
Lamb intercepts an assassin. Taverner receives a key piece of intel about the Abbotsfield shooting.
Tall Tales
An act of sabotage grinds London to a halt. Taverner interrogates Roddy. Coe is convinced a destabilization strategy is at play.
Missiles
Flyte sets out to find Roddy's girlfriend. The gang is dispatched to two different campaign events to prevent another attack.
Circus
Lamb debriefs River and Coe. Roddy is pulled in to help decipher a piece of code as the destabilization strategy nears its final stage.
Scars
It's up to the Slow Horses to stop Farouk's team from completing its mission in a final act of mass carnage.
Circle of Life
River braces for his grandfather's funeral. Lamb looks into the death of an ex–Slow Horse.
Daddy Issues
The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.
Resurrection
Ex–Slow Horses return to the fold as assassins close in. Taverner faces the fallout of her TV interview.
Lost & Found
Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.
Sayonara
River goes after Sid. Lamb sets his sights on Cantor. Taverner carries on with a treacherous deal.
Judgement Day
The safe house becomes unsafe as Lamb and Taverner finally join forces.
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