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

Summary

Lin Xuan, a skilled police academy graduate and former criminal investigator, discovers troubling details in a murder case involving three victims who were killed shortly after arriving in Beijing. The killer exhibits professional precision in their technique, suggesting they are an assassin. Lin Xuan questions the victims' motives for being in Beijing and suspects they may have been lured there deliberately. He identifies three key points: the killer's expertise, the victims' unusual trip, and the possibility that they were connected to another unresolved case. His insights astonish his mentor, Zhao Qiang, revealing Lin Xuan's exceptional investigative talent.

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