Colin Duriez has taught, written and spoken worldwide on C.S. Lewis, J. R. R. Tolkien and the Inklings for nearly thirty years. In addition to winning the Clyde S. Kilby Award in 1994 for his research, he has also appeared as a commentator on the extended-version film DVDs of the Lord of the Rings trilogy (Peter Jackson, director), PBS's The Question of God, which compared C. S. Lewis and Sigmund Freud, and the Sony DVD Ringers about Tolkien fandom and the impact of Tolkien on popular culture.
Duriez studied at the University of Istanbul, the University of Ulster (where he was a founding member of the Irish Christian Study Centre) and under Francis Schaeffer at L'Abri in Huemoz, Switzerland. His best-known books include The C. S. Lewis Encyclopedia, The Inklings Handbook (with the late David Porter), J. R. R. Tolkien and C. S. Lewis: The Gift of Friendship, Tolkien and The Lord of the Rings and A Field Guide to Narnia. Duriez also compiled The Poetic Bible, an anthology of English verse from over one thousand years based on the biblical text.