A brutal murder with a golf club and an ingenious plot bursting with snobbery, suspicion , adultery and secrets -- to say nothing of the dreadful crime of catricide... The lives of the inhabitants of Swevenings are disrupted only by a fierce competition to catch the Old Un, a monster trout known to dwell in a beautiful stream which winds past their homes. Then one of their small community is found brutally murdered; beside him is the freshly killed trout. Both died by violence -- but Chief Detective Inspector Roderick Alleyn's murder investigation seems to be much more interested in the fish...