I, King of Criminal Investigation, Solving the Rainy Night Serial Murders from the Beginning.

Summary

Chen Qing admires Wang Juan for her talent in novel writing, earning over ten thousand yuan monthly. Despite Wang Jian's advances, Wang Juan remains cautious. Chen Qing, the only one with a key to Wang Juan's apartment, expresses a desire for her mother to stay with her for safety. Guan Feng investigates potential suspects, Wang Jian and Zhao Jianguo, and arranges DNA testing. Upon learning of Wang Juan's death, Zhao Jianguo is shocked and insists on cooperation. Guan Feng requires DNA samples and statements from both Wang Jian and Zhao Jianguo to aid the investigation, emphasizing the need for their collaboration.

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