6.9
Zero Day
2025
The battle line is online
In the post-pandemic world of 2024 during an upcoming British general election involving the UK’s first Black Conservative prime minister, a leading team of analysts at the heart of the UK’s NSA-style spy agency GCHQ attempt to ward off a cyber-attack on the country’s electoral system.
Episode 1Jun 30, 2022 · 47m · ★ 3.6A 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.
Episode 2Jul 7, 2022 · 47m · ★ 2.7Saara 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.
Episode 3Jul 14, 2022 · 56m · ★ 2.4Vadim returns to Russia where his allegiances are tested, leading him to a risky stunt.
Episode 4Jul 21, 2022 · 47m · ★ 2.3With Saara in a difficult position, a revelation forces her hand. Marina moves to London.
Episode 5Jul 28, 2022 · 47m · ★ 2.3Signs 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.
Episode 6Aug 4, 2022 · 47m · ★ 3.1As 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?
In the post-pandemic world of 2024 during an upcoming British general election involving the UK’s first Black Conservative prime minister, a leading team of analysts at the heart of the UK’s NSA-style spy agency GCHQ attempt to ward off a cyber-attack on the country’s electoral system.
Hannah Khalique-BrownSaara Parvan
Simon PeggDanny Patrick
Maisie Richardson-SellersKathy Freeman
Adrian LesterPM Andrew Makinde
Edward HolcroftJames Cox
Alex JenningsDavid Neal
Hattie MorahanElizabeth Kahn
Ed StoppardRichard Marston
Sian BrookeBarbara Patrick
Joss PorterPhil D
Tom McKayMax K
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Jamie MuscatoFinn
Andrew RothneyRich T
Julian HarriesNational Security Advisor
Tinatin DalakishviliMarina Veselova
Julie BarclaySally J2025
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