Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The X-Ship | 2020 | Vaughn Heppner | N/A |
| 2 | Night of the Knife | 2022 | Vaughn Heppner | Buy |
| 3 | Sanctuary | - | Vaughn Heppner | N/A |
| 4 | Warrior of the Blood | 2022 | Vaughn Heppner | Buy |
| 5 | The Soldier: Final Odyssey | - | Vaughn Heppner | N/A |
| 6 | The Twilight Lands | 2022 | Vaughn Heppner | Buy |
The World Below takes Heppner’s storytelling underground, imagining a vast and dangerous realm hidden beneath Earth’s surface. The series follows warriors and explorers as they navigate this subterranean world, encountering threats both natural and supernatural.
Published between 2020 and 2022, the six books bring a sword-and-survival angle to Heppner’s writing. The underground setting gives the series a claustrophobic intensity different from his wide-open space operas.