| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Entering Tenebrea | 978-0-671-03607-2 (0-671-03607-6) | 2001 | Daniel Graham |
| Tenebrea Rising | 978-0-671-03611-9 (0-671-03611-4) | 2002 | |
| Tenebrea's Hope | 978-0-671-03609-6 (0-671-03609-2) | 2001 | Daniel Graham |