Episodes
1. Episode 1
7.8
June 30, 2022
47 min
A young intern's first day at GCHQ coincides with a major cyberattack on the UK. To win her superiors' trust, she breaks ranks to analyse the malware code without permission and uncovers a greater threat missed by others.
Guest Stars:
Julie Barclay, Kirsty Hoiles, Nitin Ganatra, Gavi Singh Chera, Robert Cavanah
2. Episode 2
7.0
July 7, 2022
47 min
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 agent Kathy, aware that Russian intelligence will also be there.
Guest Stars:
Mark Rylance, Nitin Ganatra, Gavi Singh Chera, Alfie Friedman, Aysha Kala
3. Episode 3
5.7
July 14, 2022
56 min
Vadim returns to Russia where his allegiances are tested, leading him to a risky stunt.
Guest Stars:
Melanie Gutteridge, Jamie Muscato, Andrew Rothney, Zaqi Ismail, Tom McKay
4. Episode 4
6.5
July 21, 2022
47 min
With Saara in a difficult position, a revelation forces her hand. Marina moves to London.
Guest Stars:
Mark Rylance, Tom McKay, Joss Porter, Sean La-Tunje, Chike Chan
5. Episode 5
6.5
July 28, 2022
47 min
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.
Guest Stars:
Mark Rylance, Julie Barclay, Gavi Singh Chera, Aysha Kala, Andrew Rothney
