Lizhu takes out a knife and attempts to cut her wrist. Pinghe and Shuncai show up in time to stop her. Growing hysterical, Lizhu becomes hysterical and forbids Pinghe to investigate the case. It pains Pinghe to see Lizhu becoming mentally unstable. Everyone is disappointed when Pinghe drops the case. Wu Yalong had revealed to Junyan and Haifeng that Caifa frequently abused Lizhu; still, she vowed to perish with him. Junyan suspects Lizhu is the murderer. Since Yalong was also one of the suspects, Yuyang points out that he could have misled them, leading them to believe Lizhu is the murderer. Junyan laments that there is no point discussing the case. Qingxiong senses the team’s unwillingness to close the case, and asks them to respect Pinghe’s decision. Qingxiong learns from his previous superior, Yang, that Lizhu was rumoured to have been in an affair at the time. The father of her eldest son was definitely not Caifa. Looking through the files, Haifeng comes across information on two suspicious blood stains at the crime scene. After doing some tests with Junyan, he confirms his deduction. Junyan believes Caifa killed Wenkai and Tingting over Lizhu’s infidelity. She then killed Caifa and Wenkang in a fit of anger. Haifeng and Junyan follow Lizhu to a nursing home. They realise the alibi, Chen Zhihan, is suffering from dementia. Watching as Lizhu shows him tender care, they suspect he was her lover. Haifeng views the video clip he recorded at the nursing home. He notices Zhihan stopping by a sleeping old man and putting the old man’s hands one on top of the other. He suddenly figures something out.
