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.