Jackie asks: "I've been told she's really good. Is she?"

I am a poor judge of this (as well as a variety of other things), as I am not a frequent reader of mysteries. This one was recommended to me because it is set in an old Church of England seminary on a remote coast and involves all sorts of issues of church politics. I am enjoying it thoroughly. P.D. James could have written, methinks, in any genre and done well.

BelMarduk amplifies: "in French, tenebrous (ténébreux) has also come to describe situations that are cryptic, difficult to read or understand. You are figuratively 'in the dark'."

The way in which the Baroness uses this adjective carries both the physical sense of darkness and the sense that the person in the chapel is, in terms of the plot, "in the dark." Clever author!

Fun word. I now need to figure out ten ways to use it in conversation, a spot for it in a sermon (maybe not until next Holy Week) and at least one written opinion into which it may be inserted.