Upcoming fanfic for Halloween.
On October 31st, Paris, France 1435
Gwendolyn, Adrianna, and Elsbeth Delarosa were burned at that stake under the crimes of witchcraft even though they had done no wrong. Just before they did they swore vengeance claiming their spirits would never rest until they made Paris suffer for what they had and vowed to return one day to exact their revenge.
Centuries later Marinette, Adrien, and their friends are getting ready for Halloween. During a party when Chloe notices Adrien taking interest in Marinette decides to frighten her away by playing a mean prank. She dares Marinette and Alya to go with her to where the Delarosa sisters were buried and reads a scripture that is fabled to bring back their spirits. As expected the scripture turns out to be true and not only do they summon the witches's spirits but they posese all three of the girls. Shortly after this Adrien, Nino, and others begin to notice some differences in the girls. Chloe is a meek and shivering coward, Marinette is flirty and seductive, and Alya is hateful and dominating. Now with help from a talking cat the boys and kwamis have to figure out a way to put the witches's spirits to rest before midnight on Halloween or the girls will die and the witches will in habit their bodies forever.