Possessions, Cults, Witchcraft and Cursed Objects are the subjects that mostly associated in real life giving it a more realistic edge compared to Vampires and Zombies. This movie is intended to creep you out not startle you. The movie is very good in maintaining its mystery and enigma which people who are used to the usual mainstream type of horror might not quite grasp it. The way the film revealing its story shows that they show more importance to making it more realistic than spoon feeding you so you can understand everything.
The actors are very good and convincing, no over acting or cringe screams from victims. The behavior of the antagonist as well is very creepy perfect. They are not trying to look like bad guys, they are bad guys trying to act normally or they thought there is nothing wrong with them.