Sonic Judgement Episode 9

Police visit lawyer Liu Wen Tao to investigate an old case, only to witness his sudden death. Although the initial judgment is heart failure induced by high blood pressure, Jiang Cheng finds suspicious footprints and rummaged study drawers at the scene, raising doubts. Forensic Doctor Chen Lu confirms through autopsy that Liu Wen Tao died of digitalis lanata poisoning, and the label inside the medicine bottle does not match the drug, confirming it was a murder. The police investigate the controversial cases Liu Wen Tao handled during his lifetime and identify worker Liang Feng as the prime suspect. However, his dashcam shows he did not enter the community at the time of the crime, and there is a time discrepancy with the community surveillance footage, indicating the surveillance was manually tampered with. Su Ling Yu deduces that someone took advantage of the gap during the security shift to commit the crime and identifies on-duty security guard Zhang Zi Ming as a suspect. But just after locating Zhang Zi Ming, he is found dead in his rental house, initially judged to have been poisoned as well, leaving the case complicated and confusing. Meanwhile, Jiang Cheng receives an urgent task from Su Ling Yu to compare and analyze the surveillance and dashcam audio and video to confirm the suspicious points. (Source: iQIYI)