| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Looking for Hamlet: A Haunting at Deeping Lake | 978-0-02-716400-8 (0-02-716400-4) | 1987 |
| Meanwhile Back at the Castle | 978-0-448-05447-6 (0-448-05447-7) | 1973 |
| Peter's Angel: A Story About Monsters | 978-0-02-716450-3 (0-02-716450-0) | 1985 |