The citizens of Quanomet are quite naturally in an uproar when they find themselves unflatteringly portrayed on a mural in the new post office. But could any one of them be angry enough to kill? Asey Mayo begins to suspect so when the corpse of a beautiful model is discovered in the garage at Octagon House. When he also learns that somebody in town is after fifty thousand dollars worth of missing ambergris, the motives, and dangers, multiply.