I'm a fan of psychological horror, like babadook was one of my favourites, along with the original Japanese "Ring", however, this was...
The story is a mixture of different movies already existed, like Rosemary's baby. Don't tell me you didn't notice! It wasn't new at all. I seek novelty so I sense it when it is there, and this? Nah. A copy, just good acting. Actors were great. Story was okay but bugged a little.
Although it is a little unsettling, haunting you after you finish it maybe?
The ending is stupid though. In short:
The movie is so-so: half disturbing and psychological, half stupid and illogical! And a decent percentage is shadows of past, old movies, brought into a different form. And acting is superb and plot is okay, except the ending. I know I know all about demons and cults, but the ending is stupid. Rosemary's baby is much better in demon aspect and ending.