I was excited to see this film because I am a horror and Rory McCann fan.
Overall, I enjoyed the movie for what it was. I have a particular preference towards supernatural horror, so if you do too, you may like this as well. It is also a psychological horror. If you read the other reviews, they mentioned that it was pretty good up until the end and that it was too slow of a burn.
I disagree that it was too slow. The pacing was on par, in my opinion, for it being just an hour and a half length movie. What I do agree with is that the ending stopped this from being great.
When I read others' reviews, they were vague on what made the ending so bad, so I was curious about it before I watched. Without spoiling it, I believe the direction that the plot went was a cop-out or a rushed way to wrap up the the story. I left the movies trying to justify the ending in a way where it could have made sense because I really enjoyed the rest of the film. Again, trying not to spoil it, the ending seemed a bit illogical (despite it being supernatural and psychological) and gives partial clarification to the plot points. Especially for those who found this to be slow, it does not give a good pay off for watching.
I still don't feel like it was a waste of time, however. I rated it a bit higher and still think its worth a watch because that particular ending happened within about the last 3 minutes of the movie, so essentially, an hour and 26 min was still good and therefore not a waste.
I also rated it a bit higher because the other parts of the film: the cinematography, costume design and sound design were really great. Especially for a horror film, the things you don't initially think about, like eerie sounds, can make or break the atmosphere and this movie did it right in setting the atmosphere during the entire run time.