Lamb and Katinsky go head-to-head. Ho finds himself trapped on a train with a Russian assassin.

The episode was rated 8.19 from 528 votes.

Lamb orders his Slow Horses to walk into traps. River believes something alarming is heading toward London.

The episode was rated 7.98 from 511 votes.

Taverner and the Slow Horses attempt different approaches to locate the kidnappers and Hassan. Ho makes a shocking discovery about Sid.

The episode was rated 7.97 from 930 votes.

The Slow Horses must disappear to avoid capture by MI5. Lamb and River head to The Park to outwit Taverner.

The episode was rated 7.81 from 938 votes.

River gets cozy in the Cotswolds while searching for a sleeper agent. Min discovers Russian drinking games are the most brutal of all.

The episode was rated 7.80 from 511 votes.

Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.

The episode was rated 7.78 from 431 votes.

Slough House is the unlikely venue for a secret romance, but events take a dark turn when a dangerous encounter becomes deadly.

The episode was rated 7.73 from 1013 votes.

Taverner sends the Dogs to hunt down Lamb and the Slow Horses. River holds the secret to saving the gang.

The episode was rated 7.70 from 939 votes.

Lamb liaises with a Russian defector who may hold a clue to sleeper agents. River is on the trail of a ruthless assassin.

The episode was rated 7.69 from 558 votes.

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.

The episode was rated 7.66 from 626 votes.