* The Burning Proof (1997)
* The Silent Brotherhood (1998)
* Shadows in the Moonlight (2001)
* After the Madness (2003)
* Hell House (2005)
* The Omega Conspiracy (2007)
* The Doomsday Prophecy (2008)
* The Judas Covenant (2009)
* The Lazarus Conspiracy (2010)
* The Armageddon Code (2012)
Μη φανταστική
* The Vatican Cover-Up (1997)
* The Da Vinci Legacy (2006)
* The Templar Revelation (2008)
* The Secrets of the Illuminati (2010)
* The Prophecy of the Popes (2012)