Die Juden - Geschichte eines Volkes
2007
In Search of Holy Treasures
2009
Religious biographies
—
Thérèse, La Petite Sainte de Lisieux
—
Religions of the World
1998
Leah Remini: Scientology and the Aftermath
2016
The Monastery
2005
2000 Years of Christianity
1999
Heaven on Earth
2004
Christianity: The First 1000 Years
1998
Christianity: The Second Millennium
2000
Extreme Pilgrim
2008
The Story of God
2005
Religion of the World
2004
Wanderlust
2016
Christianity: A History
2009
På tro og Are
2010
100% Hindoe?
2016
The Root of All Evil?
2006
Under His Command
2025