The serial murder case was finally solved, and the murderer Wu Jia (formerly known as Zhang Shanshan) was arrested and severely punished.Meanwhile, Zhang Sicheng (张思成) did not end well either.The play tells the story of criminal guards Zheng Rong and Lu Xingzhi who spent thirteen years investigating a cold case. In the end, the master and apprentice worked together to arrest the real culprit of the serial murder case.Together, Wei Zhengrong and Lu Xingzhi solved a murder case that had been hidden for thirteen years, cured Lu Anning's psychological problems, and gave all the police officers fighting on the front line an inner reward.12

In the finale, Wu Jia fell into the trap, and a heart-rending madness that lasted for thirteen years finally came to an end.Wei Zhengrong fulfilled Wu Jia's last wish and buried him in the place called “Paradise”.The solution of this unsolved case brings not joy and relief to the audience, but another kind of heaviness.

In addition, the play also shows many characters' desire for the truth and insistence on justice.Wu Xiaowen has become a difficult character, and his experience is deeply regrettable.Zhang Sicheng's motive for killing and the story behind it were also revealed. His behavior stemmed from cold violence and revenge against Bai Xiaofu.