Now that's how you slit a throat.
Now a few things and circumstances can be different but I can't help but relate this movie to the Indonesian flick Satan's Slave. Having said that it's a good horror flick on its own, driving a narrative at a decent pace with some great scares, especially the background sound which makes things even more intense.
As we move towards the finale things become pretty obvious as to what's going to happen but even then it packs a punch because of the unfiltered and completely onscreen violence which was just a treat, and the cherry on top was the final twist that made it a satisfying watch.
There will always be movies that one can relate to with some other flick because let's be serious, coming up with a completely original narrative is hard so the only way to survive is to execute it differently; and this movie does it wonderfully.