It was unknown whether Chen Shi's consolation worked, or just because he had heard Yan Qilin's name, but Zhang Jinlei sat down in his chair and held his head in pain. It seemed like he had temporarily calmed down.

The two waited for him for more than a minute. Zhang Jinlei stood up and opened the drawer. He took out a medicine bottle and took a pill with the cold coffee on the table. Chen Shi noticed that he was taking Paroxetine, a kind of antidepressant.

Zhang Jinlei's eyes were red. "Sorry, I got too agitated. I hope you can understand. I have a mental illness."

Chen Shi said, "We understand. Excuse us for disturbing you today. You know that Yan Qilin's case may have been committed by a serial killer. He will kill a girl every year on Qixi."

Zhang Jinlei nodded calmly. "I’ve heard...