Colin Duriez is an expert on C.S. Lewis, his writings and also his wider circle. He is also the author of the popular biography C.S. Lewis: A biography of friendship and J.R.R. Tolkien: The Making of a Legend (both published by Lion Books). He has also written widely on other aspects of Lewis, Tolkien and the other members of the Inklings, and has contributed to conferences, lectures, DVDs and documentaries on these subjects.