“Zero Day” is a six-episode political thriller series that premiered on Netflix on February 20, 2025. The series stars Robert De Niro as former U.S. President George Mullen, who is called out of retirement to lead a special commission investigating a catastrophic cyberattack that has plunged the nation into chaos. Angela Bassett portrays the current President, Evelyn Mitchell, who entrusts Mullen with the formidable task of uncovering the perpetrators behind the attack. As Mullen delves deeper into the investigation, he confronts a complex web of conspiracies involving tech moguls, political figures, and even members of his own family. The narrative intensifies as Mullen grapples with his own cognitive decline, possibly induced by a covert neurological weapon known as Proteus. The ensemble cast includes Lizzy Caplan as Mullen’s daughter, Alexandra; Jesse Plemons as his aide, Roger Carlson; Connie Britton as chief of staff Valerie Whitesell; and Matthew Modine as Speaker of the House Richard Dreyer. “Zero Day” explores themes of political intrigue, the fragility of truth in the digital age, and the personal toll of leadership amidst national crisis.