Urban Fireworks

On a rainy night, the criminal police knocked on the door of the late-night bookstore with a search warrant. The proprietress Lin Yu just wanted to keep the peace here, but she was drawn into the whirlpool because of two identical corpses... Unfamiliar handwriting, disappearing surveillance cameras, and dark shadows wandering late at night, the evidence points to her one by one. She is not the murderer, but the murderer wants her to step into the trap he set. Behind every book, there is a secret that cannot be told.