3 books in series
The Unseen Trilogy
The Unseen Trilogy is a 3-book series with 3 primary works first released in 2000 with contributions by Stephanie Erickson, Nancy Holder, and Jeffrey J. Mariotte.
| #1 |  Unseen
| 3 | 2 reads | ||
| #2 |  Door to Alternity Door to Alternity
| 5 | 2 reads | ||
| #3 |  Undivided
| 2 | 1 read |