"A Cup of Tea and A Cap of Death
"Armed with a copy of British Mushrooms and Toadstools, Inspector Rudd sets out to unravel a most genteel murder. One of Mrs. Rene King's acquaintances had managed to slip her a Mickey -- in this case a batch of deadly poisonous mushrooms, the infamousDeat Cap Amanita."
~~back cover
I love this series! Inspector Rudd reminds me of Mr. Mosely (Murder, Mr. Mosley, What Me, Mr. Mosley?, The Mind of Mr. Mosley, The Missing Mr. Mosley, Mosley by Moonlight, and Mists Over Mosley -- John Greenwood, author): as quiet, unassuming little man -- almost invisible, with a genius for solving mysteries.
Absorbing, well-plotted, a penetrating insight into psychology, and tea in England.