Murder on a Foggy Rainy Night

A perfectly dismembered corpse, a woman who had been missing for ten years. Criminal police captain Yue Xiaofeng took over the "broken hand case", and all the evidence pointed to the old enemy Lu Biao. However, when the investigation involved his ex-wife's huge debt and led to the tragic death of his brother, Yue Xiaofeng realized that this was not only revenge, but also a sophisticated plan against him. The murderer used a surgical scalpel to commit the crime, and his technique was as calm as a ritual. And all of this vaguely points to the partner Chen Yuqin who mysteriously disappeared after going on a mission with him on that rainy night ten years ago. Is she really dead? If she was still alive, why did she show up ten years later? And is her return redemption, or deeper destruction?