Silo is based on a trilogy by which author?

Silo is based on a trilogy by author Hugh Howey. The trilogy consists of Wool, Shift, and Dust, which together form a post-apocalyptic story about humanity surviving inside massive underground silos.

Howey first published Wool as a short story in 2011 and expanded the idea into a sequence of novellas that were later collected as the novel Wool. Shift explores the origins and history of the silo system, while Dust brings together the series’ major threads. The books became a notable self-publishing success before attracting film and television adaptation interest.

The television series primarily follows Juliette Nichols, an engineer whose investigation reveals that the Silo’s official history is incomplete. A frequent confusion is treating Graham Yost as the author: Yost created the television adaptation, while Howey wrote the novels. The books are also commonly described as three novels, even though Wool originated as several connected novellas. Apple TV+ adapted the trilogy into the Silo series.