Season 1

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  7.2/10308 votes

  Episode 1

  Season 1 Episode 1 - Aired 6/30/2022

  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.

  Director: Peter Kosminsky

  Writer: Adam Patterson, Declan Lawn, Peter Kosminsky, Amelia Spencer

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  7.3/10257 votes

  Episode 2

  Season 1 Episode 2 - Aired 7/7/2022

  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.

  Director: Unknown

  Writer: Unknown

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  7.4/10239 votes

  Episode 3

  Season 1 Episode 3 - Aired 7/14/2022

  Vadim returns to Russia where his allegiances are tested, leading him to a risky stunt.

  Director: Unknown

  Writer: Unknown

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  7.2/10209 votes

  Episode 4

  Season 1 Episode 4 - Aired 7/21/2022

  With Saara in a difficult position, a revelation forces her hand. Marina moves to London.

  Director: Unknown

  Writer: Unknown

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  7.2/10202 votes

  Episode 5

  Season 1 Episode 5 - Aired 7/28/2022

  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.

  Director: Unknown

  Writer: Unknown

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  7.4/10256 votes

  Episode 6

  Season 1 Episode 6 - Aired 8/4/2022

  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?

  Director: Unknown

  Writer: Unknown