Pursuing the Murderer in an Old Case: a Call from the Deceased

Gu Yanzhou was once the best liar in the Lanjiang City Criminal Investigation Team. He doesn't use a lie detector, just counts the pauses in breathing when people speak. Three years ago, the old Baiduqiao case took away his sister Gu Qinghe, and also destroyed his police uniform and future. Now he makes a living by collecting debts and investigating missing persons, with only an old copper coin in his pocket, and he will never give in. On a rainy night, he received a strange phone call. The person on the other end of the phone had been dead for seventeen minutes, but he clearly called out his name, asked him to go to the seventeenth floor of Haijing Bay, and left a message: Don't trust Shao Linfeng. Han Shaoting, the deceased in Haijingwan, was a wealthy businessman in Lanjiang City. The door was locked, and the view outside the window was 100 meters in the air, but the surveillance was missing a section before and after the crime. There was a crescent-shaped scar on the chest of the deceased, which was exactly the same as the old Baiduqiao case three years ago. The secret room, the call from the deceased, the distorted surveillance, and the six-fingered man drawn by the child dragged Gu Yanzhou back to the depths of the old case————