Exclusive: Thunderbolts* Star Hannah John-Kamen Joins Josh Holloway in Gripping EMP Disaster Thriller ‘One Second After’

The Next Big Disaster Thriller Just Got a Major Power Boost

The entertainment world is buzzing with the news that Hannah John-Kamen, the breakout star behind Marvel's Ghost in Thunderbolts*, has signed on to star alongside Josh Holloway in the upcoming disaster thriller One Second After. According to the verified details in Screenshot (550).png, the film, adapted from William R. Forstchen's acclaimed 2009 novel, is shaping up to be one of the most intense survival epics of 2026.

John-Kamen will portray Makalya, a nurse caught in the chaos after a brutal electromagnetic pulse (EMP) attack cripples the United States. Holloway, forever immortalized as Sawyer from Lost, plays John Matherson, a college professor and former military officer who must rally his North Carolina community to survive the collapse of modern society. Together, they bring a compelling human drama to a world plunged into darkness.

A Match Made in Post-Apocalyptic Heaven

The source material is a chillingly realistic exploration of what happens when technology vanishes in an instant. Forstchen's novel has long been praised for its gritty, emotional take on survival. In the film, Makalya is described as someone who “fights to keep the community alive as modern society unravels, offering both medical expertise and emotional resilience.” That combination of grit and heart is exactly why John-Kamen was the perfect choice.

Holloway's Matherson is a leader born from necessity, while John-Kamen's Makalya provides the moral and medical backbone. Their partnership is the emotional core of the story. With production kicking off this month in Sofia, Bulgaria, the chemistry between these two stars will be pivotal.

Behind the Scenes: A Dream Team of Creatives

This isn't just any disaster movie. The screenplay comes from the legendary J. Michael Straczynski, the mind behind Babylon 5 and Marvel's Thor comics. Straczynski knows how to write complex characters under pressure. And at the helm is director Scott Rogers, whose resume reads like a masterclass in action cinema. Rogers served as stunt coordinator and second unit director on John Wick: Chapter 4, Tron: Ares, The Matrix Resurrections, and Ford v Ferrari. If there's anyone who can stage an EMP attack with jaw-dropping realism, it's him.

Producing the film are Rob Pfaltzgraff and Nick Reid of MPI, along with Matt Kennedy from Startling Inc. Author William R. Forstchen is on board as executive producer, ensuring the adaptation remains faithful to his bestseller.

Hannah John-Kamen: From Ghost to Survivor

The British actress is having a phenomenal year. She recently reprised her role as Ava Starr, aka Ghost, in Thunderbolts*, starring alongside Florence Pugh, Wyatt Russell, Sebastian Stan, and David Harbour. Her performance brought a haunting depth to a character often overshadowed by the team's bickering. But her work doesn't stop there.

According to Screenshot (550).png, John-Kamen is also part of the cast of Avengers: Doomsday, currently filming in the UK. That puts her at the center of the MCU's next massive phase. Her other credits include the horror flick Unwelcome, Resident Evil: Welcome to Raccoon City, Netflix's The Stranger, and the TV series Brave New World. Each role showcases her range, from eerie and supernatural to gritty and grounded.

Landing the lead in One Second After is a smart move. It lets her pivot from blockbuster spectacle to a more intimate, character-driven thriller—a perfect showcase for her emotional range.

Josh Holloway: Back in Survival Mode

For Josh Holloway, the role of John Matherson feels like a homecoming of sorts. The actor made his name on Lost as the cunning survivor Sawyer, a role that demanded both charm and steel. Since then, he's starred in Colony and Yellowstone, proving he can anchor a tense narrative. Here, he'll once again be the man everyone looks to when the lights go out. The EMP attack in One Second After is no island mystery—it's a very real threat that could happen tomorrow. Holloway brings that grounded, everyman-hero energy that made him a star.

What Makes This Disaster Thriller Different?

EMP disaster stories have a unique resonance. Unlike a hurricane or earthquake, an EMP attack silently kills all electronics, leaving a society that runs on computers, phones, and cars instantly stranded. The novel One Second After was praised for its realistic depiction of the social breakdown that follows—hunger, disease, and the reversion to small-town tribalism. The film aims to capture that same chilling authenticity.

Key elements from the source material include:

• A small North Carolina town cut off from the world.
• The struggle to find food, medicine, and security.
• Moral dilemmas as neighbors become enemies.
• A nurse and a professor who must lead without authority.

That grounded approach is what sets this film apart from typical CGI-laden disaster epics. It's about human choices, not just explosions.

Production Details and Release Buzz

Filming begins this September in Sofia, Bulgaria, a location known for its versatile landscapes and skilled crews. The choice of location suggests a gritty, European-influenced aesthetic that could lend the movie a darker, more realistic feel. With a screenplay by Straczynski and direction by Rogers, the project has the pedigree to attract top talent behind the camera as well.

As the film heads into production, fans of both John-Kamen and Holloway are already marking their calendars. The combination of a beloved novel, a star-studded cast, and a visionary action filmmaker makes One Second After one of the most anticipated disaster thrillers in development. Stay tuned for more updates as the cast completes and the first trailer drops.

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