张天笑迫于压力，决定跟陈一鸣合作。陈一鸣表示他调查到，几名死者潜在的共同点就是男童，凶手很有可能是当年失踪的男童之一。报社编辑将匿名信拿给陈一鸣等人，他们迅速判断出，下一个遇害者是周启儒厂长。陈一鸣和姚菲从高局长那里得到启发，发现重生有重大嫌疑。陈一鸣万万没想到，这一切其实都是蒋函知暗中策划的，其实，他才是真正的幕后黑手。
Under pressure, Zhang Tianxiao decided to cooperate with Chen Yiming. Chen Yiming said that through his investigation, the potential commonality among the deceased persons was that they were boys, and the murderer was most likely one of the boys who disappeared that year. The newspaper editor showed the anonymous letter to Chen Yiming and others, and they quickly determined that the next victim was factory director Zhou Qiru. Chen Yiming and Yao Fei got inspiration from Director Gao and discovered that there was a major suspicion in the rebirth. Chen Yiming never expected that all of this was secretly planned by Jiang Hanzhi. In fact, he was the real mastermind behind the scenes.
