Helaine Mario Books In OrderPublication Order of Maggie O’Shea Mystery BooksPublication Order of Standalone NovelsLeave a Reply
| The Lost Concerto | (2015) | Description / Buy at Amazon |
| Dark Rhapsody | (2018) | Description / Buy at Amazon |
| Shadow Music | (2022) | Description / Buy at Amazon |
| Firebird | (2012) | Description / Buy at Amazon |