Psychological Mysterious Case.

Summary

Song Ao Yue approaches Professor Su Yun to offer him a consulting position with the municipal bureau, but he initially refuses, revealing his disinterest in criminal investigations, citing his interest in her instead. Eventually, he agrees on the condition of obtaining a black notebook belonging to a deceased mentor, which contains significant case notes. They visit the mentor's home, where they retrieve the notebook from his wife, who reveals the emotional burden it holds for Ao Yue due to her brother's suicide. Reflecting on their shared past, Su Yun commits to uncovering the truth behind a past case, while Ao Yue grapples with her unresolved grief.

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