| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Double Danger | 978-0-478-23759-7 (0-478-23759-6) | 2000 | |
| Mandy's Secret | 978-0-478-23763-4 (0-478-23763-4) | 2000 | |
| Stuck / Tunnel Under the Sea | 978-0-478-24742-8 (0-478-24742-7) | 2002 | John Bonallack |