- In the City of the King (1999)
- Song of Our Redeemer (2001)
- Daughters of the Light: A Biblical Novel (2003)
- The Sword and the Veil: A Novel of St. Nicholas (2006)
- The Rock and the Song (2008)
- Angel of God: A Byzantine Saga (2009)
- The Stone That the Builder Refused: A Novel of the Council of Nicaea (2011)
- The King's Daughter: A Novel of Saint Brigid of Kildare (2013)
- The Bride of Christ: A Novel of Saint Mary Magdalene (2015)
Nonfiction:
- From the Heart of a Pilgrim (2002)
- To Heaven & Back: Near-Death Experiences and Christian Hope (2005)
- Walking into Eternity: A Pilgrim's Companion to the Church Year (2010)
- Heaven Revealed (2012)
- Angels: A Divine Encounter (2014)