Episode 1

Fang Yat Jin (played by Chan Jiale) discovered that his father Fang Yixin (played by Lu Zhenshun), a lawyer, was engaged in illegal activities. He gave up studying law in anger and left Hong Kong to study criminal psychology.At the same time, a reporter died accidentally. Policewoman Xing Kelan (played by Chen Xiaohua) learned that the accident involved wealthy businessman Fan Guohong, but was blocked by her boss from investigating, so she had to investigate secretly... Five years later, Ri Jin returned to Hong Kong to work as a university lecturer and was invitedAssisting the police in investigating the case, forensic assistant Zhuang Dingqin (Ruan Hao Zong)) found clues that allowed Ri Jin to profile the prisoner's habits... Ri Jin and Ding Qin found a body, and Kelan took it back to the police station for questioning, and finally found out the truth.Ri Jin received a request for help email from someone claiming to be Mary. Ri Jin contacted Mary but was surprised to see that Mary looked exactly the same as Kelan...