Silo is an American science fiction dystopian drama television series created by Graham Yost, based on Hugh Howey's Silo trilogy (Wool, Shift, and Dust). Set in a giant underground complex of 144 levels housing 10,000 people, it stars Rebecca Ferguson as engineer Juliette Nichols, who unravels the mysteries and strict regulations governing her society. The project began as a film adaptation in 2012, was shelved, and then picked up by Apple TV+ in May 2021, with the ten-episode first season premiering on May 5, 2023. The second and third seasons followed on November 15, 2024, and July 3, 2026, respectively, and the series has been renewed for a fourth and final season set to air on July 9, 2027. The show has earned positive reviews for its world-building, production design, and Ferguson's powerful performance, supported by a notable ensemble including Rashida Jones, David Oyelowo, Common, and Tim Robbins. With its compelling mix of mystery, political intrigue, and survival tension, Silo has become a standout hit in modern science fiction television.