I watched it on the recommendation of a friend, and it can be regarded as a "good and recommendable" horror movie.
In the film, Diana has an entity but cannot exist independently in the world. It is not affected by ultraviolet light but is damaged by other light. It should be an existence that cannot be explained by science. Everyone said that the heroine's boyfriend is very good: it's rare in a horror movie to have a character who doesn't run around in the dark, can open the curtains, and can call the police ~ I'm sorry for the two policemen, they died without knowing anything.
My favorite is the heroine's younger brother, who is very responsible at a young age. In any case, he will never be "abandon mom". At first, he was worried that no one would believe him and said nothing. When he was very scared, he would say "don't leave me again" to the heroine. It was the boyfriend and younger brother who saved the heroine and mother at the level of "family love".
The most unsatisfactory is the end of the film: the suicide of the mother makes Diana disappear completely, protecting the family. It made me feel like the ending was a bit rushed, because the protagonists haven't worked their way, and the villains have all disappeared in such an unsatisfactory way.
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