Episode 1
Covert CIA agent Martian is called back to London Station.
Episode 2
A spooked source threatens to put an operation at risk.
Episode 3
Martian finds a needle in a haystack and confronts Sami about London.
Episode 4
Henry and Martian run diplomatic interference. Danny walks a tightrope.
Episode 5
Henry sends Owen to Minsk in a hunt for clues. Martian sets a rat trap.
Episode 6
Martian scrambles to unravel Cossack's game. Osman plays his hand.
Episode 7
Bosko is briefed on Valhalla. Martian, Henry and Naomi strategize a play.
Episode 8
Martian's approach doesn't go to plan. Sami makes a startling confession.
Episode 9
Martian buys time with a bluff to Langley. Danny crosses the Rubicon.
Episode 10
Bosko shares a grim reality; Naomi receives troubling news; Felix gets overtaken by events.
