Some thrillers hit harder because they feel like they’re playing five minutes into the future. This one has always lived in that uncomfortable space, where the danger is not a masked killer or a bomb under a table, but a line of code, a foreign adversary, and the horrible realization that an entire country can be destabilized before most people know anything is happening. Now, the series is returning with a fresh wave of tension, and the timing still feels annoyingly plausible.
The Undeclared Warreturns on August 27, 2026, with the new season set in 2024 as the elite Malware Department at GCHQ deals with the aftermath of a devastating Russian cyber-attack. Just when it seems the UK has gained the upper hand, Danny and his team discover a mole in their midst and uncover a far more dangerous threat. So, yes, a normal day at work, if your job involves national security, betrayal, and everyone pretending not to panic in government offices.
The cast includes Simon Pegg (Shaun of the Dead, Mission: Impossible — Fallout) as Danny Patrick, Siân Brooke (Sherlock, Blue Lights), Hannah Khalique-Brown (The Undeclared War, Red Rose), Alex Jennings (The Crown, A Very English Scandal), Danny Sapani (Black Panther, Penny Dreadful), Ed Stoppard (The Pianist, Knightfall), and Chloe Pirrie (The Queen’s Gambit, The Victim).
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Collider Exclusive · Action Hero Quiz Which Action Hero Would Be Your Perfect Partner? Rambo · James Bond · Indiana Jones · John McClane · Ethan Hunt
Five legends. Five completely different ways of getting out alive — with style, with muscle, with charm, with luck, or with a plan so intricate it probably shouldn’t work. Ten questions will reveal which action hero was built to have your back.
🎖️Rambo
🍸James Bond
🏺Indiana Jones
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🔧John McClane
🎭Ethan Hunt
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01
You’re dropped into a dangerous situation with no warning. What do you need most from a partner? The first few seconds tell you everything about who belongs beside you.
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02
You have to get somewhere dangerous, fast. How do you travel? How you get there is half the mission.
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03
You’re pinned down and outnumbered. What does your ideal partner do? This is when you find out what someone is really made of.
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04
The mission is paused. You have one evening to decompress. What does your partner suggest? Who someone is when the pressure drops is who they actually are.
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05
How do you prefer your partner to communicate mid-mission? Good communication is the difference between partners and a liability.
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06
Your enemy is powerful, well-resourced, and has the upper hand. How should your partner approach them? The approach to the enemy defines the partnership.
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07
Things go badly wrong and you’re captured. What do you trust your partner to do? Who someone is when you need them most is the only thing that matters.
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08
What does your ideal partner bring to the table that you couldn’t replace? A great partner fills the gap you didn’t know you had.
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09
Every partnership has a cost. Which of these can you live with? No one comes without baggage. The question is whether you can carry it together.
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10
It’s the final moment. Everything is on the line. What do you need from your partner right now? The last question is the most honest one.
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Your Partner Has Been Assigned Your Perfect Partner Is…
Your answers have pointed to one action hero above all others. This is the person built to have your back — for better or considerably, spectacularly worse.
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Rambo
Your partner doesn’t talk much, doesn’t need to, and will have assessed every threat in your immediate environment before you’ve finished your first sentence. John Rambo is not a man of plans or politics — he is a force of nature shaped by survival, loyalty, and a capacity for endurance that goes beyond anything training can produce. He will not leave you behind. He has never left anyone behind who deserved to come home. What you get with Rambo is the most capable, most quietly ferocious partner imaginable — one who has been through things that would have broken anyone else, and who chose to keep going anyway. You’ll never need to ask if he has your back. You’ll just know.
James Bond
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Your partner will arrive perfectly dressed, perfectly briefed, and with a cover story so convincing it’ll take you a moment to remember what’s actually true. James Bond is the most professionally dangerous person in any room he enters — and the most disarmingly charming, which is the point. He operates in a world of layers, where nothing is what it appears and every advantage is used without apology. You’ll never be bored. You’ll occasionally be furious. But when it matters — when the mission is genuinely on the line and the margin for error has collapsed to nothing — Bond is exactly the partner you want. He has survived things that have no business being survivable. He does it with style. That is not nothing.
Indiana Jones
Your partner will know the history, the language, the cultural context, and exactly why the thing everyone else is ignoring is actually the most important thing in the room. Indiana Jones is brilliant, reckless, and occasionally impossible — but he is also one of the most resourceful, most genuinely knowledgeable partners you could find yourself beside. He approaches every situation with a scholar’s eye and a brawler’s instinct, which is an unusual combination and a remarkably effective one. He hates snakes and gets personally attached to objects of historical significance, both of which will slow you down at least once. It doesn’t matter. What Indy brings is irreplaceable — and the adventures you’ll have together will be the kind people write books about. Assuming you survive them.
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John McClane
Your partner was not supposed to be here. He does not have the right equipment, the right information, or anything approaching the right odds. He has a sarcastic remark and an absolute refusal to accept that the situation is as bad as it looks. John McClane is the greatest accidental hero in the history of action cinema — a man whose superpower is stubbornness, whose contingency plan is improvisation, and whose capacity to absorb punishment and keep moving would be alarming if it weren’t so useful. He will complain the entire time. He will make it significantly more chaotic than it needed to be. And he will absolutely, unconditionally, without question come through when it counts. Yippee-ki-yay.
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Ethan Hunt
Your partner has already run seventeen scenarios by the time you’ve finished reading the briefing, and the plan he’s settled on involves at least two things that should be physically impossible. Ethan Hunt operates at the absolute edge of human capability — technically, physically, and intellectually — and he brings the same relentless precision to protecting his partners that he brings to dismantling organisations that shouldn’t exist. He is not easy to know and he will never fully tell you everything. But he will carry the weight of the mission so completely, so absolutely, that your job is simply to trust him — and the remarkable thing is that trusting him always turns out to be the right call. The mission will be impossible. He will complete it anyway.
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Why Is ‘The Undeclared War’ Still So Unnerving?
When the first season launched, Pegg spoke about the real-world anxieties behind the show and why its cyber-war setup felt so frightening. Discussing the series on The Chris Evans Breakfast Show with Sky, Pegg said one of the most interesting things he discovered was the existence of troll farms where people pretend to be British online, use British slang and hashtags, and deliberately provoke arguments that are then amplified by bots.
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“The discourse just becomes shouting, and it destabilises our society. That’s actively happening,” Pegg said. He also warned that people engaging in political conversations online may be interacting with “a foreign adversary without realising it,” adding, “It’s so pervasive and other places are all over it.”
The Undeclared War is not just about hackers typing very fast in dark rooms, though, legally, every cyber-thriller must include at least some of that. Pegg also said that “nothing in the show hasn’t happened, or hasn’t been war gamed by our Ministry of cyber defence,” calling the subject “pretty scary.” He later summed up the show’s nastiest idea in one blunt line: “Information is power. Really now it’s becoming about not who’s telling the truth, but who’s telling the biggest lie the loudest. That’s terrifying.”
The series is created by Peter Kosminsky and Colin Callender, with Colin Teevan, Amy Ng, Emily Marcuson, and Roland Walters writing the new season. Paul McGuigan directs, while executive producers include Callender, Daniel Gratton, and Noëlette Buckley for Playground, Kosminsky for Stonehenge Films, Teevan, and McGuigan. The series comes from Playground, Stonehenge Films, and Universal International Studios, a division of Universal Studio Group.
The Undeclared War returns August 27, 2026 on Peacock.
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