| # | Book Title | Author | |
|---|---|---|---|
| 1 | Descent into Overworld | O'Donnell, Liam | |
| 2 | Nether Nightmare | O'Donnell, Liam | |
| 3 | Escape from the End | O'Donnell, Liam |
Juvenile Series and Sequels
| # | Book Title | Author | |
|---|---|---|---|
| 1 | Descent into Overworld | O'Donnell, Liam | |
| 2 | Nether Nightmare | O'Donnell, Liam | |
| 3 | Escape from the End | O'Donnell, Liam |