There is a TV actor named Song Yuan, Jinlong and Yang Ting.

Just as Jinlong came back with the money to untie Yang Ting, he found that Yang Ting had been killed in the house. Knowing that life was hard, Jinlong ran to his cousin to take shelter. Through the time of committing the crime and various evidences, the police judged that Jinlong was not the murderer of Yang Ting. The real murderer came in through the door, and the door lock was not pried open. So the killer must have the key to Yang Ting's apartment. Is it because Song Yuan gave the key to the murderer on purpose, or is there another reason? Zhou Yang learned that strangers often appeared in nightclubs before Yang Ting died, but all the surveillance videos only captured the back of this person, and he had to find the back of this person, which was very suspicious.

Please accept it if you are satisfied ~