| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Danger After Dark | 978-0-590-13743-0 | 1997 | A. E. Parker |
| Footprints in the Fog | 978-0-590-13745-4 | 1997 | " |
| Stormy weather | 978-0-02-185136-2 | 2001 | |
| The Clue in the Crystal Ball | 978-0-590-13744-7 | 1997 | A. E. Parker |