Who will be more difficult to defeat? The supernatural and the prejudgment?

SYNOPSIS:

A family move in to a house in Myrtles Plantantions, St. Francisville, Louisiana, United States, where strange phenomenon start to happen. The christian symbols fail to expel the evil. Only one thing can save them: a religious image given to a girl, Ângela, the firstborn of the family, by an amerindian (Native American), famous in Brazil: the carranca. However, beyond the evil that pursued her, the girl will have to face the religious prejudgement of your family that refuse to use the image to save them. Ângela will face her horror alone.

Attention: this is not a script, but a book.

Does history mix two famous folklore: United States (Louisiana) and Brazil, and can be sold in these countries. If it is basically in a house then it would be cheap to make and would have commercial appeal since they are based on well-known folklore.

The book in Amazon: Carranca - Horror based on the legends of the Myrtles Plantation