For more than half a century, C S Lewis' Narnia series has captured the imagination of millions. Alister McGrath, Professor of Theology, Ministry and Education at King's College London, tells us that behind the best-selling books and Hollywood movies lies the unlikely story of an Oxford don who spent his days teaching medieval English Literature, his nights writing a best-selling fantasy series for children, and who became an inspiring, though reluctant, prophet of modern Christianity. Recorded April 2013.