There are not many bright spots in the plot, at least I think so. The design of the suspense may be the bits and pieces recorded by that camera, especially those small and weird images in the second half of the night. Like many horror movies, when people start to relax and feel nothing special, it comes back with two scenes that it thinks are the most frightening, and then ends. Although it's a bit of a cliché, it still has a certain effect, at least a lot of people are scared.
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