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

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

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

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

Relations between Robert and Cora continue to be strained. Blake’s scheming starts to come to fruition when Mary is unexpectedly pitted against her love rival. Edith receives some terrible news…

Preparations are under way for Rose’s wedding, but family tensions on both sides threaten to derail proceedings. Edith’s arrangement with Marigold is happily working out, but how long can she…

Red and the Task Force pay a visit to a former blacklister, as an explosive confrontation leads Liz to make a critical choice

Red sets the Task Force on the trail of a Blacklister with the tools to manipulate memories, causing Liz to question her own experiences. As Gale intensifies his investigation, Ressler…

After stealing a large amount of money from a bank, a man is found crucified on the moors. The Treasury call in the team to investigate, but when Harry decides…

Horatio fights to save Yelina and when Delko goes against Calleigh’s plea and helps his dangerous father, his life is put in jeopardy.

When pirates take over a luxury yacht, Delko’s future as a CSI is threatened just as his relationship with Calleigh moves to the next level.

Jack enlists the help of an autistic man in the search for Gredenko, and Sandra Palmer makes a fateful decision.

Jack baits Fayed with Gredenko, while the President faces a challenge to his office.

Jack’s search takes him to the Russian Consulate, while the Vice President contemplates a sweeping executive order.

The search for Gredenko finds Jack hunted inside the Russian Consulate and a former President calling on his ex-wife.

CTU’s satellite tracking system is compromised as a bomb-carrying drone heads toward an unknown city. Meanwhile, US forces prepare for a nuclear retaliation on the Middle East.

Jack looks for a Russian national as his father plots with shadowy patriots. Meanwhile, the President and the Constitution may be in danger.

While Jack looks for Gredenko and tries to save Josh, White House intrigue deepens.

Jack’s search takes him to the home of an old enemy, while a bomber slips into the White House.