Psychological Mysterious Case.

Summary

The criminal investigation team discovered He Zheng Lei as the mastermind behind Yama, a vigilante who manipulates victims' relatives to seek revenge on criminals who escaped justice. He was motivated by his sister's murder by Huo Yun Ling, who avoided punishment by feigning mental illness. He Zheng Lei, a software engineer, used his technical skills to track and incite revenge, reading psychology books to understand manipulation. The team found his workplace, social media, and apartment, which contained a wall of photos of criminal suspects, with Huo Yun Ling's photo marked with a red X, indicating he was the next target.

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