The BEST episodes of The Undeclared War
Every episode of The Undeclared War ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Undeclared War!
A leading team of analysts in GCHQ secretly work to ward off a series of cyber-attacks on the UK in the run-up to a general election in post-pandemic 2024.
#1 - Episode 1
Season 1 - Episode 1 - Aired 6/30/2022
Student Saara wins a coveted internship at GCHQ, but when a significant part of the UK's internet goes down, she quickly finds herself operating on the frontier of high-stakes cyber warfare.
#2 - Episode 2
Season 1 - Episode 2 - Aired 7/7/2022
Saara finds a suspicious line of encrypted text within the virus's code and unravels a dubious invitation. Is she getting closer to the truth or falling into a trap?
#3 - Episode 3
Season 1 - Episode 3 - Aired 7/14/2022
Saara's classmate Vadim returns to St Petersburg. He reluctantly takes a covert job and soon becomes the victim of his own success as his allegiances are put to the test, leading him to a risky stunt.
#4 - Episode 4
Season 1 - Episode 4 - Aired 7/21/2022
With Danny unconvinced by Saara's exchange with a whistleblower, she's in a difficult position, but a revelation from Kathy forces Saara's hand. Meanwhile, Marina takes up a new opportunity in London.
#5 - 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.
#6 - 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?
#7 - Episode 1
Season 2 - Episode 1 - Aired 7/21/2026
Danny is under huge pressure dealing with the fallout from the Russian cyber-attack when a bold new threat emerges. Saara discovers that there’s a mole in GCHQ. And Vadim is missing and in danger...
#8 - Episode 2
Season 2 - Episode 2 - Aired 7/21/2026
Vadim realises that he must try to escape captivity in Shenzhen. Back at GCHQ, Danny and Roz clash over China. And has Charlie unearthed the mole?
#9 - Episode 3
Season 2 - Episode 3 - Aired 7/21/2026
When Barbara's charming ex-boyfriend, Nicky Chan, re-appears in her life, she must make an impossible decision.
#10 - Episode 4
Season 2 - Episode 4 - Aired 7/21/2026
While Danny becomes increasingly concerned about Barbara’s erratic behaviour, malware causes havoc across British government departments, forcing Danny and Roz to work together.
#11 - Episode 5
Season 2 - Episode 5 - Aired 7/21/2026
Barbara comes under Charlie’s scrutiny as tragedy strikes GCHQ. Danny, Saara and Roz attempt to help Vadim escape. And Danny makes an earth-shattering discovery.
#12 - Episode 6
Season 2 - Episode 6 - Aired 7/21/2026
Danny puts everything on the line in order to right some wrongs. Meanwhile, Roz and the team must race against the clock to find out what the malware is searching for.