All my life as a Christian I have been caught in the crossfire between social justice and traditional piety. I find Tomáš Halík tremendously encouraging and fresh. His essay, The Post-Tolerance Age, will give you a taste.
I watched the Brother Cadfael series on PBS years ago, but I have only recently begun to sample the vast genre of medieval mystery fiction. I had read some mysteries by Bernard Knight set in Wales and Malaya in the 1950's, and liked them enough to try his Crowner John medieval stories. I have been spicing my reading with a couple of non-fiction titles, Life On The English Manor, by H. S. Bennett, and Western Society and the Church in the Middle Ages, by R. W. Southern.
I started a bibliography for a future display, but this list by N. S. Hurt on his Historical Mystery Fiction page is all anyone could want.