“An official personage like you might embarrass them, don’t you know, but there’s no dignity about me. I’m probably the least awe-inspiring man in Kirkcudbright. I was born looking foolish and every day in every way I am getting foolisher and foolisher.”

The seventh novel in Dorothy Sayers’ Lord Peter Wimsey series is The Five Red Herrings, a book that, I fear, has not aged well. The Amazon reviews suggest that most other contemporary readers agree.

Back in the 1930s or so, readers loved their puzzles, and spent time on them. Crossword puzzles were a relatively new innovation, and they took the country by storm. A corollary was the railway timetable mystery, in which the culprit’s alibi is based on a clever manipulation of train times, and the detective must figure out the trick. I assume readers worked at these books the same way they did with their crosswords, attacking them with pencils and pads of paper. Railroad timetables were familiar and interesting to them, because that was how urban people traveled back then.

The town of Kirkcudbright, in the Scottish county of Galloway, is home to a renowned, picturesque artistic colony. These people are generally friendly and amiably competitive, but they all share a loathing of Campbell, a black-bearded semi-talent with a massive, defensive ego, a drinking problem, and a reflexive tendency to resort to his fists.

So no one is much grieved when Campbell’s corpse is found one morning in a river at the foot of a steep bank, below an unfinished painting on an easel surrounded with artist’s supplies. But Lord Peter, examining the site, notices something the police have missed. One object that ought to be there is not there – and it can’t be found. So it’s not an accident but murder, and the investigation begins. Suspects are not lacking. The problem is that they all have alibis that seem solid. Several of them involve travel on trains.

For a reader not willing to work the puzzle by means of transcribing timetables and comparing them closely, reading The Five Red Herrings involves a lot of taking things as given that you don’t quite follow. This makes for some fairly opaque reading for long stretches. But Lord Peter is as amusing as usual, and he does get some good lines off. And there’s some very clever work in the final solution to the mystery.

Most readers today find The Five Red Herrings the least interesting of the Wimsey series. But if you’re reading the books and enjoying them, you should probably not skip it.