Forensic toxicology is one of the most intriguing areas of crime history, and the detection of arsenic poisoning holds a grim fascination to this day. I've combined my interest in historical poisoning cases (I do have a small collection of poison bottles in my study!), and my love for languages to study the most sensational murder case in 19th century France, L’Affaire Lafarge, in which Marie Lafarge was tried for murdering her husband with arsenic.
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