The Undeclared War poster
★ 7.0
The Undeclared War poster

Overall Rating

★ 7.0
S1 E3
#1
★ 7.4

Episode 3

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

S1 E6
#2
★ 7.4

Episode 6

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?

S1 E2
#3
★ 7.3

Episode 2

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.

S1 E1
#4
★ 7.2

Episode 1

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.

S1 E4
#5
★ 7.2

Episode 4

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

S1 E5
#6
★ 7.2

Episode 5

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.

S1 E1
#1
★ 7.2

Episode 1

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.

S1 E4
#2
★ 7.2

Episode 4

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

S1 E5
#3
★ 7.2

Episode 5

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.

S1 E2
#4
★ 7.3

Episode 2

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.

S1 E3
#5
★ 7.4

Episode 3

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

S1 E6
#6
★ 7.4

Episode 6

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?

S1 E1
★ 7.2

Episode 1

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.

S1 E2
★ 7.3

Episode 2

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.

S1 E3
★ 7.4

Episode 3

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

S1 E4
★ 7.2

Episode 4

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

S1 E5
★ 7.2

Episode 5

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.

S1 E6
★ 7.4

Episode 6

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?

Season Average Rating Episodes Best Episode Worst Episode
1 ★ 7.3 6
★ 7.4 Episode 3
★ 7.2 Episode 1