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.
The 1996 investigation into 48-year-old Martha Hansen's murder is helped by a legal requirement that bars have video cameras installed on the premises.
S7E23 22 min
