| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| The Unknown Darkness: Profiling the Predators Among Us | Paperback | 978-0-06-050958-3 (0-06-050958-9) | 2004 | |
| The Unknown Darkness: Profiling the Predators Among Us | Hardcover | 978-0-06-050957-6 (0-06-050957-0) | 2003 | Katherine Ramsland |