Zero Day Cast Revealed: Everything You Need To Know About The Star-Studded Netflix Political Thriller

The highly-anticipated Netflix limited series, Zero Day, has finally arrived, and its powerhouse ensemble cast is the biggest headline. This political thriller marks a monumental moment for the streaming giant, not only for its gripping plot centered on a devastating cyberattack but also for bringing legendary actor Robert De Niro to the world of television drama in a lead role as a former U.S. President. As of December 10, 2025, the series is generating massive buzz, with viewers eager to dissect the performances of a roster that includes Oscar winners, Emmy favorites, and some of the most respected names in Hollywood. The show’s premise—a high-stakes investigation into a national catastrophe—is perfectly matched by the gravitas of its main players, promising a must-watch event for fans of political intrigue and suspense.

The series, created by Eric Newman and Noah Oppenheim, plunges into the dark heart of a global crisis, forcing a retired political figure back into the fray when a mysterious cyberattack threatens to unravel the nation. The cast is a masterclass in dramatic talent, with each actor bringing a depth of experience to their complex roles. From the former President himself to the intelligence agents and family members caught in the crosshairs, the full list of stars is a testament to the show's prestige. This deep dive into the Zero Day cast, plot, and production details will prepare you for the intense drama that has captivated audiences since its release.

Zero Day: The Complete Main Cast and Character Guide

The success of a high-stakes political thriller rests entirely on the shoulders of its performers, and Zero Day delivers an exceptional lineup. The following is a full list of the primary actors and the crucial roles they play in the unfolding cyber-conspiracy.

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• Robert De Niro as George Mullen: The central figure of the series. Mullen is a revered former U.S. President who is pulled out of retirement to investigate a massive cyberattack that has thrown the country into chaos. His character is driven by a need for truth and a deep sense of national duty.
• Angela Bassett as Evelyn Mitchell: A powerful and respected figure, often operating in the highest echelons of government or intelligence, and a key player in the investigation alongside Mullen.
• Jesse Plemons as Roger Carlson: A significant role, often portrayed as a key operative, aide, or investigator connected to the Mullen family or the central crisis.
• Lizzy Caplan as Alexandra Mullen: The daughter of George Mullen. Her character is likely a strong, independent figure who may be a journalist, a politician, or otherwise directly involved in the political world.
• Connie Britton as Valerie: A high-profile role, often associated with political or governmental roles in thrillers, adding another layer of complexity to the cabinet or investigative team.
• Joan Allen: Cast in an undisclosed but major role, her presence immediately signals a character of significant authority and dramatic weight.
• Bill Camp: A veteran actor known for his intense dramatic roles, likely playing a key figure in law enforcement, intelligence, or a skeptical political opponent.
• Dan Stevens: Known for his versatility, Stevens is cast in a prominent role that could be a protagonist, antagonist, or a morally ambiguous figure in the unfolding drama.
• Matthew Modine: Another seasoned performer, Modine's role adds to the depth of the ensemble, likely portraying a government official, a tech mogul, or a suspect.

The Gravitas of Robert De Niro and Angela Bassett

The sheer star power of the two leads, Robert De Niro and Angela Bassett, is the foundation of Zero Day's prestige. For De Niro, taking on the role of George Mullen is a rare venture into a television series, a move that immediately elevated the project to event status. His portrayal of a former President who is simultaneously a national hero and a target of suspicion is a masterclass in restrained intensity. The character of Mullen is designed to be complex: a man whose past decisions are scrutinized as he attempts to solve a present-day crisis.

Equally compelling is the casting of Angela Bassett. Bassett, known for her commanding screen presence, plays Evelyn Mitchell, a character whose political or intelligence background makes her Mullen's peer and sometimes adversary in the investigation. The dynamic between these two legends—De Niro's stoic intensity and Bassett's sharp, authoritative demeanor—is a major draw for the series, creating a compelling power struggle amidst the national emergency. Their involvement ensures the show is not just a thriller but a deep character study of power, accountability, and the burden of leadership.

Plot, Production, and Release: What You Need to Know

Zero Day is a six-episode limited series that centers on the aforementioned George Mullen, a celebrated former U.S. President. The core of the plot is a devastating cyberattack that cripples America's infrastructure and raises unsettling questions about the country's security and leadership. The title itself, "Zero Day," refers to a vulnerability in software that is unknown to the vendor but can be exploited by hackers, making the threat immediate and catastrophic.

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The series is not just about the technical aspects of the hack; it's a whodunit that forces Mullen to confront his own legacy. As he steps back into the spotlight to lead the investigation, he begins to question if the attack is connected to his own past decisions or a dark secret he thought was buried. The showrunners have crafted a narrative that blends political drama with high-tech espionage, ensuring a constant sense of paranoia and urgency.

A Look at the Creative Team and Production

The creative forces behind Zero Day are as impressive as the cast. The series was created by Eric Newman, known for producing hit Netflix series like Narcos, and Noah Oppenheim, a screenwriter with credits like Jackie. Lesli Linka Glatter, an Emmy-winning director known for her work on Homeland, also serves as a director and executive producer. This team brings a proven track record of delivering sophisticated, high-quality, and politically charged thrillers.

The series premiered on Netflix on Thursday, February 20, 2025. The production was a large-scale effort, with filming taking place in various locations, including Connecticut, which added a sense of authentic political and governmental settings to the series. The show is structured as a limited series, meaning the central mystery is resolved within the six episodes, though there has been some surprising discussion about the potential for a second season, depending on the story's trajectory and audience reception.

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LSI Keywords and Topical Entities for Zero Day

To fully understand the world of Zero Day, it helps to be familiar with the key concepts and entities that frame the narrative. These elements are the building blocks of the show's topical authority and are essential for fans searching for more information:

• Cyberattack: The central catastrophic event that drives the plot.
• Limited Series: The format of the show, consisting of a fixed number of episodes (six).
• Political Thriller: The genre, blending government intrigue with suspense and mystery.
• George Mullen: The former U.S. President played by Robert De Niro.
• Evelyn Mitchell: The high-ranking official played by Angela Bassett.
• Showrunners: Eric Newman and Noah Oppenheim, the creators and executive producers.
• Netflix: The streaming platform hosting the series.
• Government Conspiracy: A key thematic element of the plot.

The combination of a timely, high-stakes plot, a prestige creative team, and a cast of unparalleled talent has solidified Zero Day as one of the most talked-about television events of the year. Its exploration of modern cyber warfare and political accountability is both terrifying and timely, making it a must-watch for anyone who appreciates a tightly-wound, star-driven drama.