A thing I noticed and thought I'd point out:

G.K. Chesterton, fabulous charmingly eccentric English Catholic writer, wrote a large number of stories about an unassuming little priest called Father Brown who wandered round solving crimes which had some, sometimes slight, connections to proper theological issues.
Cadfael, recently popularised by Mr. Jacobi, is a fictional crime-solving monk.
Father Dowling Mysteries is a TV series I've never watched, but which James made me aware of. Here, again, we have a crime-solving priest (and his nun mate, Steve). Some of the additions to the book of Daniel that we have in the Catholic version are basically detective stories. In Bel and the Dragon, Daniel exposes false gods with some holy cunning, and he defends Susanna from blackmail and rape by cross-examination.

So what's the deal with Catholicism and detective stories?