Den "perfekte forbrydelse" findes ikke. Find ud af hvorfor i Forensic Files, hvor virkelige efterforskere sætter spor og beviser sammen for at opklare de mest uhyggelige forbrydelser.
Mark Fair left for work and his fiancée, Karla Brown, stayed home. Later, he found her dead. During the autopsy, bite marks on her body were re-examined and forensic odontology identified the killer.
S4E7 21 min
