| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Astonishment!!! | 978-1-934555-40-8 | 2008 |
| Italian Mysteries | 978-0-9766048-6-0 | 2005 |
| The Castle of Ollada | 978-0-9766048-2-2 | 2005 |
| The Impenetrable Secret, Find it Out! | 978-0-9777841-3-4 | 2006 |
| The Midnight Bell: A German Story, Founded on Incidents in Real Life | 978-1-934555-12-5 | 2007 |
| The Mysterious Freebooter; or, The Days of Queen Bess | 978-0-9777841-9-6 | 2007 |