Among the five books I have reread for Thursday reviews this January, The Case of the Gilded Fly (1944), the debut of the composer Bruce Montgomery under the name Edmund Crispin, is unique in that I wasn’t completely sure I could remember the guilty party. The method by which our corpse finds itself shot in a room to which there was no access and no open windows through which a bullet could be fired was dimly in my brain somewhere, but I had the very enjoyable experience of rereading something and being able to treat it as a genuine problem…trying to work out if my suspicions came from dim remembrance of the solution or were merely smelly fish. So that was fun.