A 721 poisoning and corpse dumping case occurred in Nanwan City. Four members of Zhang Xinjiang's family were killed and their bodies were disgraced.Interpols Zhu Xiao and Lin Hui intervened in the investigation and found that the poison came from chicken soup.Zhu Xiao neglected his lover Zhong Qinghe because of long-term case handling, and did not notice her depression.The two men spotted a suspicious woman when they left the scene, and the case began.
