The Late Edwina Black (1951)
When a sickly Victorian woman dies suddenly, a postmortem reveals that her body contains a fatal dose of arsenic. Suspicion falls on her husband and her companion, who are lovers. Inspector Martin of Scotland Yard solves the mystery of her death... over a cup of tea. detective, scotland yard, housekeeper, extramarital affair, arsenic, murder suspect, murder plot, paid companion, victorian era
ETC.
