Kill Baby... Kill/Operazione Paura (1966)

At the beginning of the 20th century, Inspector Kruger calls Dr. Paul Eswai to perform an autopsy on the body of a woman who was found dead in the village where she lived. The coachman leaves Dr. Eswai at the boundary of the village and advises him to return, since the place would have been abandoned by God. Dr. Eswai is assisted in the autopsy by Monica Schuftan, a young woman who has just returned to her hometown, and they find a coin in the heart of the woman. Inspector Kruger goes to the Graps Villa to investigate the rumors about a local curse that claims that the victims are killed by the ghost of a girl called Melissa. Meanwhile, Ruth, who is the local witch and the mistress of Burgomaster Karl, tries to protect the daughter of the innkeeper, Nadienne, with magic under the protest of Dr. Eswai. When Karl and Nadienne are murdered, Dr. Eswai goes to Graps Villa and discloses an evil curse on the feared and superstitious villagers produced by the hatred of her grieving mother.

IMDb: https://www.imdb.com/title/tt0060794