In the movie, there are many shots from the outside through the crack of the door. I have been imagining the scene of a knife passing through the eyeball, but it did not. Maybe I am evil than the director.
In terms of plot, perhaps the director wanted to give us a surprise at the ending, but he failed, which can be said to be contradictory (a scene where two men are in a room and one is killed by a man in a hood). This turning point is abrupt. The idea of transmitting this signal through a mobile phone is actually good, but the retrospective explanation is slightly insufficient, which makes people feel that the director hastily ended because of insufficient film. As for the last innocent policeman...I have no idea at all, maybe the mushroom is really effective.
If the movie goes on with the idea of evil spirits, personally, it will feel better than it is now: the heroine was possessed by evil spirits and killed her partner. Many evil spirits existed in the movie, so in the end The police made sense.
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