| title | media type | ISBN-13 | year of publica- tion |
|---|---|---|---|
| Audrey's Door 18c Flr | Mass Market Paperback | 978-0-06-191442-3 | 2009 |
| Audrey's Door 18c Mxd Flr | " | 978-0-06-191443-0 | 2009 |
| Audrey's Door | " | 978-0-06-162421-6 | 2009 |
| The Keeper | " | 978-0-06-087290-8 | 2006 |
| The Keeper | Hardcover | 978-0-7553-3369-1 | 2006 |
| The Keeper | Paperback | 978-0-7553-3371-4 | 2006 |
| The Missing | Mass Market Paperback | 978-0-06-087291-5 | 2007 |
| Virus | Hardcover | 978-0-7553-3372-1 | 2007 |
| Virus | Paperback | 978-0-7553-3374-5 | 2007 |