M S. · Michael P. Spradlin · Michael S.
| title | ISBN-13 | year of publication |
|---|---|---|
| Keeper of the Grail | 978-0-399-24763-7 | 2008 |
| Keeper of the Grail: Book 1 | 978-0-14-241461-3 | 2009 |
| Orphan of Destiny | 978-0-14-241959-5 | 2011 |
| Orphan of Destiny: Book 3 | 978-0-399-24765-1 | 2010 |
| Trail of Fate | 978-0-399-24764-4 | 2009 |