DC Forensic Factor - Forensics on Trial (2004)

A six-year-old girl, Andrea Atkinson, is found dead in the boiler room of her Toronto tenement. Forensic investigators quickly determine she has been raped and smothered. There are no witnesses. Quick-thinking cops experiment with the sound in the boiler room by yelling with the door closed. Outside, total silence. Whoever killed Andrea knew no one would hear him.