Death Is No Sportsman — Cyril Hare

Every weekend, four men devoted to fly-fishing gather at a small resort hotel in rural England to enjoy their favorite sport. Though not friends, the men have learned to get along in order to share fishing rights to an especially desirable section of the River Didder. Yet beneath the surface of courtesy shown by these men, there are unexpected currents that flow inexorably to murder along the riverbank. Inspector Mallett shrewdly resolves the case with his clever use of fishing lore and practice.