* _A Prayer for the Dying_ (1990)
* _The Taken_ (1993)
* _The Resurrectionist_ (1994)
* _The Covenant of the Flame_ (1995)
* _The Lazarus Curse_ (1996)
* _The Book of the Dead_ (1997)
* _The Last Whisper_ (1998)
* _The Blood Stone_ (1999)
* _The Stone Circle_ (2000)
* _The Serpent's Shadow_ (2001)
* _The Judas Strain_ (2002)
* _The Apocalypse Scroll_ (2003)
* _The Omega Directive_ (2004)
* _The Final Covenant_ (2005)
* _The Genesis Key_ (2006)
* _The Revelation Code_ (2007)
* _The Doomsday Prophecy_ (2008)
* _The Extinction Event_ (2009)
* _The Armageddon Strain_ (2010)
* _The Lucifer Principle_ (2011)
* _The Omega Deception_ (2012)
* _The Annihilation Agenda_ (2013)
* _The Doomsday Code_ (2014)
* _The Zero Hour Revelation_ (2015)
* _The End of All Days_ (2016)
Non-Fiction
* _The Real Da Vinci Code_ (2004)
* _Beyond the Da Vinci Code_ (2005)
* _Unveiling the Truth About the Turin Shroud_ (2009)
* _Secrets of the Vatican_ (2010)
* _The Lost Treasure of the Knights Templar_ (2011)
* _The Ark of the Covenant: The Real Story_ (2012)
* _The Hidden History of Jesus_ (2013)
* _The Final Days of Jesus: The Truth Behind the Crucifixion_ (2014)
* _The Secret Life of Mary Magdalene_ (2015)
* _The Judas Mystery_ (2016)