Could it be that as with Christie and Wodehouse when there is Magistrate scenes only 1 of them is an Actual important Character so only they are mentioned, although the other 2 may be there but there is no need to mention them so they aren't. or it could be Licence on the part of Christie and Wodehouse.
hlo every oneA friend wanted a bloody story, so she wrote Hercule Poirot's Christmas, I imagine her as a strong willed person who wrote for herself, but no one is that indifferent to public opinion. Can you see signs that she is writing in particular places or types of,people? What things do you think her readers liked, plot and surprise wise?