As the true extent of Russia’s interference with the UK becomes clear, Saara and her former classmate join forces. Can they uncover the hidden code and prevent a war?
Signs of irregularity in the UK general election result prompt political unrest, and the nation’s relationship with its allies is threatened. Saara makes a devastating discovery.
With Saara in a difficult position, a revelationi forces her hand. Marina moves to London.
Vadim returns to Russia where his allegiances are tested, leading him to a risky stunt.
Saara befriends John, a veteran GCHQ staffer, and seeks help from Gabriel in decrypting a message in the virus. Danny signs off on Saara attending a cyber conference with US…