Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Angels of the Earth | 2013 | Peter Cawdron | Buy |
| 2 | Underground | 2013 | Peter Cawdron | N/A |
| 3 | They Kill | 2013 | Peter Cawdron | N/A |
| 4 | Missing | 2013 | Peter Cawdron | N/A |
| 5 | Shadows | 2013 | Peter Cawdron | Buy |
| 6 | They Feed | 2018 | Peter Cawdron | Buy |
| 7 | Chosen, Stranded, Destined | 2018 | Peter Cawdron | Buy |
| 8 | Hidden | 2018 | Peter Cawdron | Buy |
| 9 | Forgotten Hero | 2021 | Peter Cawdron | Buy |
| 10 | Unity | 2025 | Peter Cawdron | Buy |
Peter Cawdron wrote 10 books set in Hugh Howey’s Silo Saga Universe, the post-apocalyptic world introduced in Howey’s Wool. The entries, beginning with Angels of the Earth and Underground (both 2013), explore different corners of the silo world, from the people living inside to those who venture outside. They Kill, Missing, and Shadows round out the early batch, with later entries like They Feed, Hidden, and Unity extending the series through 2025.
These books expand the Silo universe with Cawdron’s science fiction sensibility. They are best read after at least some familiarity with Howey’s original novels, though each tells its own story within the shared setting.