
A covert CIA agent is ordered to abandon his undercover life and return to London Station; when the love he left behind reappears, romance reignites.
In the Fishbowl, Naomi gives Craig a lesson in chess; Dr. Blake questions Blair; Nils gets a case of the yips, forcing Martian to pivot to keep plans in play.
A stealth move in Bahrain pays dividends; Nils pitches De Bruyne a plan that could solve all their problems; Dr. Blake challenges Naomi on her camouflage; Osman accepts his fate as, outside the University, Danny is met with a shock.
Henry's suspicions reveal hidden treachery; Simon and Blair uncover a loose cannon in Antwerp; Bosko sets his sights on a strategic flip; Martian, in his element, offers up a life jacket; in Bahrain, Craig's pitch to Popeye yields unexpected intel.
Bosko is briefed on Snow White and the scope of Viking's game play; Sami, trapped, swallows her emotions; Naomi makes a difficult confession; down in the Matrix, Henry narrows his focus; Martian looks to find a Trojan Horse.