The Returned (Los Que Vuelven)

In 1919 South America, a landowner's wife is desperate for a child of her own, having suffered through multiple miscarriages.

She finds hope, however, in a seemingly outlandish plan: with the help of their Guarani servant, she'll pray to a mythical deity to resurrect her stillborn son.

The plan works, but with the child comes something else, something evil.