* Den svarte rosen (2004)
* Den skjulte byen (2006)
* Inkaenes hemmelighet (2008)
* The Treasure of the Templars (2010)
* The Lost Codex (2012)
* The Maya Prophecy (2014)
* Den siste hemmeligheten (2016)
* The Book of Shadows (2018)
* The Devil's Triangle (2020)
Faktalitteratur:
* The History of the Inca Empire (2002)
* The Mysteries of Machu Picchu (2005)
* The Secrets of the Pyramids (2007)
* The Knights Templar:A History (2009)
* The Voynich Manuscript:A Mystery Unraveled (2011)
* The Dead Sea Scrolls:A New Translation (2013)
* Judasevangeliet:En ny tolkning (2015)
* The Turin Shroud:A Scientific Investigation (2017)
* The Nazca Lines:A New Perspective (2019)