Art of the Devil (2004)

Love him, Own him, Kill him.

A pregnant woman is abandoned by her lover. Enraged, she goes to a witch doctor and uses black magic to have her ex and his family killed, only for another woman claiming to be her lover's secret mistress to claim his inheritance and move into his house with her children. Not long after that, inexplicable things happen to that family and, one by one, they begin to die.