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In page La Voisin:

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The death of the king's sister-in-law, the duchesse d'Orléans, had been falsely attributed to poison[citation needed], and the crimes of Madame de Brinvilliers (executed in 1676) her accomplices were still fresh in the public mind.[citation needed] At the same time, a riot took place during which people accused witches of abducting children for the black masses, and priests reported that a growing number of people were confessing to poisoning in their confessions.[citation needed]