Solving the Case is Slightly Bitter, My Sister is Super Sweet.

Summary

Lin Xuan, a determined investigator, focuses on solving a complex murder case involving a family of three and a missing eldest daughter, Wu Xiao Hui. After exhausting traditional investigation methods, he discovers a crucial lead: an additional mobile SIM card with data usage before the murders. The investigation reveals Wu Xiao Hui, a 24-year-old from L Province, disappeared in Beijing after graduation, frequenting nightclubs and bars. Her family reported her missing, and now Lin Xuan and his team are pursuing leads to uncover the connection between her disappearance and the brutal murders.

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