The ending is that Liao Yafan is dead and Xing Bureau is dead. Fang Mu exchanged his own body for evidence of the murderer's murder. He was later rescued and his whereabouts are unknown.

"City Light of Psychological Crime" is a crime film jointly produced by Shanghai Film Group Co., Ltd. and Anle (Beijing) Film Distribution Co., Ltd., directed by Xu Jizhou, starring Deng Chao, Ai Hanjuan, Liu Shishi, Yu Ailei and Chen Xiaoxuan, featuring Lin Jiaxin, and starring Guo Jingfei and Remy in friendship.

Introduction:

A series of murders caused revelry and commotion in this city. In several cases, the victims were abused to death, full of ritual sense. All the clues are related to one person-Fang Mu (Deng Chao), a talented detective who is proficient in criminal psychology. When working with my colleague Mi Nan (Liu Shishi).

Fang Mu finds that Jiang Ya (Han Juan), who used to be his high school classmate, seems to hide many secrets. At this time, a user named "City Light" appeared on the Internet, allowing the public to decide the life and death of lawyer Ren Chuan (Guo Jingfei) by voting. Although Fang Mu, Mi Nan and other policemen tried their best, they still could not stop this dark trial of "fighting violence with violence".