Ending: When C+ is on the pen with a silver pen body and a gold pen cover in the photo, it is determined that the pen belongs to Azer. Unexpectedly, the details of the pen in the video are the explosion of all doubts. This pen was given to policeman Aze by C+ at that time. Due to some special reasons, this pen is uniquely identifiable. So the scenes flashed one by one, and it turned out that policeman Aze had a specialty in imitating other people's notes.

So on the night of Mo Huixin's crime scene, Aze first imitated Mo Huixin's signatures for several accomplices. , and then went out for a walk. After Mo Huixin died, Aze asked a few of them to dispose of the body and was called back to the police station due to an emergency. He never dreamed that those few people would dump the body in the garbage dump where C+ crashed. He slapped himself hard.

Later, when Aze was desperate, he asked C+ to repay some money to temporarily pay the interest. However, Aze knew that this money was far from enough, so he had no choice but to cooperate with the double-eyed man Axiong as a police officer. Mo Huixin planned Mo Huixin's horrific murder plan. C+ recalled that when he was held hostage by the two-eyed man, it seemed that the two-eyed man was winking at someone, as if he was conveying some signal, asking for help, but Aze killed the two-eyed man Ah Xiong in order to silence C+, regardless of the danger of C+. C+ also recalled that policeman Aze repeatedly told him not to investigate the case; he appeared inexplicably at the door of Mo Huixin's house; he suddenly appeared at the scene of the crime where Xi Rong died;

Tell C+ that Su Fang's nails were stained with Xirong Fiber, including why Xi Rong called C+ instead of the police before Xi Rong was killed, was because Xi Rong knew that it was the policeman Aze who wanted to kill him. Everyone in C+ was stunned, so the film replayed several conversations between Aze and Axiong before and after the incident was exposed. The truth was finally revealed in front of the audience. It turns out that Aze was also a criminal who slipped through the crackdown and committed murder for money, but then he took control of the entire process after the incident was exposed.

Extended information:

Plot summary——

Detective Chen is a private detective who has fallen on hard times. One day, Feilong's man drunkenly took a photo of a woman and asked Tan Dai to find "her" to stop the woman from trying to kill him. When he found out there was a generous reward, he agreed to the task entrusted by Fei Long. Detective found the store in the photo and learned that the woman's name was Mo Huixin and she was a regular customer of the store.

I went to look for Huixin, but saw that the door of Huixin’s house was heavily locked. Shiduoji took the address of a man named Da Tou Ming and asked him to try it. When the detective arrived at Da Tou Ming's home, he was shocked to find that Da Tou Ming had hanged himself in the living room.

There are several photos of women believed to be having an affair with Da Tou Ming stored in Da Tou Ming's mobile phone. One of them is named Yan. From Yan's mouth, the detective found out that Sufang is one of Da Tou Ming's partners. Tan went to Fang's house and found that Fang had already burned charcoal to death. Feng Ze said that Fang, like Da Tou Ming, committed suicide due to debt, but the police found a large amount of cash in Fang's home. Things are getting more and more confusing.