Strange things happened frequently in the room on the third floor of Building 4, a high-end community in Qingdu City. There was often a rotten smell in the bathroom, and miserable cats meowing often at night. The male owner hanged himself at home after half a year of staying there, and then a naked female body was found in the bathroom.
The police began to suspect that Ma Qiang, who had an affair with Ding Shuang, was responsible. After interrogation, he was ruled out as a suspect.
Xiaoliang, a decoration worker at Jianghe's house, is a major suspect. He transported a truckload of sand to Dijing Community in the middle of the night on the day of the incident. After that, many bizarre things happened to him. However, after investigation, the bizarre incident was confirmed to be a rumor, and the community guard Lao Liu also provided an alibi for him.
As the investigation deepens, Ding Shuang's tragic life and unfortunate experiences are revealed to people bit by bit.
Ding Shuang's parents divorced when he was 2 years old, and he has lived alone since he was 16 years old, relying on being a backup singer in KTV. After marrying Yang Xu, he was about to quit his job as an accompanying singer and live a good life with Yang Xu, but he was accidentally raped by Jiang He. After reporting the crime, Jiang He bribed KTV staff with money. The KTV boss did not provide relevant evidence for fear of affecting the business. After Ding Shuang suffered this blow, he often tortured himself and had thoughts of committing suicide.
Yang Xu didn't want Ding Shuang to torture him, so after killing him, he planned to kill Jiang He.
Intent: suspense reasoning, sadomasochism, revenge