A very good concept for horror, but the abundance of mistakes and shortcomings, including from our localizers, break the entire perception of history.
Localizers immediately burned down the office, translating "Opening Unknown" as "The Demon Inside." Well, there is no doubt about the mystical nature of what is happening in the film.
The film itself contains in the center of an extremely interesting idea with the main character and her role, but it is not possible to promote it to the end - a mystical element with an abundance of hallucinations and otherworldly at some point leads to the fact that it becomes impossible to understand the logic of the world.
It would be a very cool place for the movie. There would also be a moral and an adequate explanation.