This white phosphorus misadventure takes us to 19th Century France as reported by the 27th February 1875 Illustrated Police News.
Though difficult to read the text, I have managed to decipher that a Mademoiselle by the name of Brigetté Burckel had been found guilty of poisoning using our favourite element 15. She had already married twice, with these husbands suspiciously meeting an early death. With a third lined up, it appears that the lucky man already had a wife. No problem however for Brigetté, who got to work.
The adulterer planned to kill her nemesis with poison, and although being turned down by a chemist for arsenic, was recommended phosphorus based rat poison.
It appears that she had gained acquaintance with her love rival, and had baked cakes with her, whilst slipping in some of her p4 cake mix. This was consumed, with obvious results of illness. The poisoner then struck again putting a further poison into her medicine and finished her off.
A post mortem revealed poisoning and she confessed to the crime. Like other infamous female poisoners in Britain like Louisa Merryfield and Mary Wilson, she was sentenced to death. Madame La Guillotine would teach her a lesson , but her baking days were surely numbered.
Off with her head!!!!