Breaking Amish
2012
Saints and Sinners: Britain's Millennium of Monasteries
2015
In the Name of God: A Holy Betrayal
2023
Christianity: The First 1000 Years
1998
Christianity: The Second Millennium
2000
På tro og Are
2010
Religious biographies
—
Religion of the World
2004
Compass
—
100% Hindoe?
2016
Around the World in 80 Faiths
2009
Wanderlust
2016
The Root of All Evil?
2006
2000 Years of Christianity
1999
Thérèse, La Petite Sainte de Lisieux
—
The Story of God
2005
The Life of Muhammad
2011
Heaven on Earth
2004
Inside Scientology
2018
New Testament History and Literature with Dale B. Martin
2009