Exhibit A: Secrets of Forensic Science

T05:C04 - S05:E04 - Killer Next Door

Two teenage girls are ambushed by a man wielding a baseball bat. He wants to party. The girls resist but in the struggle, one girl is beaten and left in a coma and the other is raped and murdered, her body dumped in the nearby river. As police mobilise their investigation, the killer taunts them by telephone. For months, the killer eludes the police and terrorises the town. It takes forensic dentistry, behavioural and geographical profiling, fingerprinting and an unexpected tip to put a face to the voice of a devious killer.