Does anyone have recommendations for mysteries or thrillers with a religious element?

I just read Conclave by Robert Harris and loved a) how much detail it contained about the inner workings of a papal conclave and b) how much respect and even reverence the book held for the faith of the characters.

In a similar vein, I also loved The Beautiful Mystery in the Armand Gamache series (set in a secluded monastery).

Does anyone have book recommendations that might fit in this category? I’m not necessarily looking for books focused on Catholicism, but any locked-room mystery or thriller focusing on an insular faith community.