Old sins cast new shadows.
Follow a dysfunctional team of MI5 agents—and their obnoxious boss, the notorious Jackson Lamb—as they navigate the espionage world's smoke and mirrors to defend England from sinister forces.
Jackson Lamb
River Cartwright
Diana Taverner
Frank Harkness
David Cartwright
When a young man is kidnapped and threatened with beheading, the slow horses find themselves unexpectedly embroiled in a dangerous case that forces them to prove their worth.
6 episodes
River Cartwright is ousted from MI5 and finds himself in a place worse than purgatory: Slough House, dumping ground for failed spies.
Runtime: 54 minRiver and Sid join forces. A misfired gun has dire consequences.
Runtime: 49 minSlough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.
Runtime: 42 minTaverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.
Runtime: 44 minThe Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.
Runtime: 43 minTaverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.
Runtime: 54 minLong-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.
6 episodes
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.
Runtime: 44 minLamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.
Runtime: 50 minRiver gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.
Runtime: 54 minLouisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.
Runtime: 46 minLamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.
Runtime: 42 minLamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.
Runtime: 46 minA romantic liaison in Istanbul threatens to expose a buried MI5 secret in London. When Jackson Lamb and his team of misfits are dragged into the fight, they find themselves caught in a conspiracy that threatens the future not just of Slough House but of MI5 itself.
6 episodes
A romantic relationship in Istanbul ends badly. Lamb hits the panic button when one of his Slow Horses fails to show up for work.
Runtime: 45 minRiver has to steal something out of the Park to save a life. Lamb realizes a stranger game is afoot.
Runtime: 41 minMarcus and Shirley face Lamb's wrath. River discovers revenge is a dish best served cold.
Runtime: 45 minTearney makes a bold move. The Slow Horses assist the Tiger Team, unaware of their hidden agenda. Lamb and Ho take a road trip.
Runtime: 46 minTaverner and Tearney face off for control of MI5. River and Louisa find themselves caught in the crossfire.
Runtime: 42 minThe Slow Horses fight for their lives. Lamb shares some devastating truths with Catherine.
Runtime: 45 minIn season 4, a bombing detonates personal secrets, rocking Slough House's already unstable foundations.
6 episodes
A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.
Runtime: 44 minA naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.
Runtime: 47 minRiver is trapped in France. Back at Slough House, the Dogs have come for Lamb.
Runtime: 47 minTaverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
Runtime: 43 minLamb questions David about France as River comes face to face with the enemy.
Runtime: 41 minImpossible decisions are faced and sacrifices are made.
Runtime: 53 minOfficial Trailer