Jiang An arrives in this world as a forensic science student, carrying the expertise of a former university professor. Four years later, he graduates with perfect scores across all subjects and enters the Jiangcheng City Public Security Bureau as a forensic doctor. A female student's death sparks heated debate among investigators. Colleagues quickly conclude suicide, citing the pressures faced by modern high school students. But Jiang An's keen eye reveals a darker truth—the victim, Li Rui, was already dead before being hung, a distinction that transforms the entire case. "Everyone is welcome to voice their thoughts, whether you support or challenge the suicide verdict," the lead investigator announces. "Suicide is obvious!" "High school stress is massive!" But Jiang An steps forward with quiet conviction: "Mr. Li, I must respectfully disagree. Li Rui did not take her own life. She was hung posthumously." His forensic analysis cuts through assumptions, uncovering the real story behind the death that others missed—one case among many where his exceptional skill makes the critical difference.