Where the Truth Lies (1962)

François is a vet surgeon on the Noirmoutier island. He is married to Catherine. One day, he is called by a mysterious attractive woman, Myriam, whose leopard is sick. They become lovers. But Myriam lived in Africa for years and she seems to have maleficent powers. Besides, she is a jealous possessive woman who wants to keep François for herself alone. She owns a strange statuette which might cast a spell on someone who's on the way, François's wife for instance. And Catherine falls suddenly seriously ill.