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

Summary

Zhao Dong and his team conduct an inquiry with Chen Han regarding a valve leak incident at his factory. Chen Han reveals he earns around 5,000 yuan monthly, slightly above local factory wages. He discusses a recent protest for wage increases, which was resolved with promises of a raise. However, he expresses confusion about the valve incident, suggesting it must be an insider due to specific knowledge required. After a fingerprint scan, it is revealed that Chen Han's prints match those found at the scene, raising suspicions about his involvement. The team reassures him that he is not yet considered a suspect but needs to explain the situation further.

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