In a small town full of skeletons in closets, eccentric eccentrics, and old women reminiscent of Miss Marple, a murder has occurred. The victim's name is Colonel Cartarett, and he is found on the river bank next to the legendary giant trout, which they have long dreamed of catching. all local fishermen. But that’s not why they killed him, after all? Then why? Inspector Alleyn begins to ask questions and immediately understands: only a few here are ready to tell the truth...