Ben Wickham, a famous meteorologist whose uncannily accurate forecasts have helped famers and graziers all over Australia, has died after a three-week drinking bout.
The doctor certifies that his death was cause by heart failure due to alcoholic poisoning.
But Ben's neighbour and drinking partner, John Luton, is convinced his friends didn't die from too much gin. He manages to lure Detective-Inspector Napoleon Bonaparte to his riverside cottage near the South Australian coast, on an unofficial visit for a spot of fishing.
Bony, thinking at first he's on holiday and paying a casual visit, is intrigued and decides to investigate.