As a suspense film, the film uses a lot of mathematical equations, as well as logic and mathematical theory. The film tells the story of a series of serial murders that took place in a British institution of higher learning
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The horror of the film is not to make people creepy through the pictures, nor to use a cunning rhythm to make people dare not breathe, but to try to guide people to take a breath when they look back after thinking clearly
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The film breaks through the traditional suspenseful horror film mode in narrative mode, and also ingeniously combines thriller and detective film into one, using numbers and logic to detect this super-intelligent murder case
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