Detective Zhong and Officer Yang have a conversation about doing the right thing or the righteous thing. In conclusion to which, Yang decides to quit her job. The next day they give the final report about Mei Bao's suicide. As next of kin, Ah Jun gets a report as well. Yang tells him about what Mei Bao was wearing in her last moments and Ah Jun becomes agitated. Suddenly Yang realizes Meng Yu's ex-wife seemed to know what Mei Bao was wearing without them telling her. She goes to speak with her and Shen Mei Qi admits that she was in the vent and she saw everything and even recorded it. Mei Bao intended to kill herself along with Yong Yuan but her brother's call changes her mind and she lets Yong yuan go instead. However, he kills her and makes it look like it was suicide. With her evidence, Yong Yuan is finally arrested for intentional homocide. (Source: Autumn carrot at MyDramaList)