The film, an indie gothic psycho-supernatural thriller centering on an alienist, Grace Burnham (played by Amber Heard), who journeys to a secluded village in the 1890s to assist a young boy, Martin Marquez (Lorenzo Zaini), displaying unusual behavior that locals connect to their recent troubles, is among the best examples of its genre. The acting, visual design, landscapes, and clothing all combine effectively to enhance the film's story and underlying ideas. The question arises: Is Martin truly possessed, as many villagers suspect, or does he have Savant Syndrome, as Grace suggests? Conor Allyn and his team do a remarkable job of investigating and revealing this enigma, making it a movie I would suggest most people see at least once. The conclusion is likely to leave viewers wanting more, hoping for a continuation of the story.

Source on TMDB