The Innocence of Father Brown by G.K. Chesterton

Amazon | Project Gutenberg
The little priest was so much the essence of those Eastern flats; he had a face as round and dull as a Norfolk dumpling; he had eyes as empty as the North Sea; he had several brown paper parcels, which he was quite incapable of collecting...He had a large, shabby umbrella, which constantly fell on the floor. He did not seem to know which was the right end of his return ticket.
The first of four short-story collections featuring Chesterton's famous amateur detective Father Brown, the mild-mannered, insignificant-looking little English priest with a gift for recognizing the simple solutions to seemingly fantastic crimes.