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.
The cry for help comes from Oklahoma City's most exclusive neighborhood. It's Valentine's morning and socialite Susan Hamilton lies nude, in a pool of blood. The science suggests a crime of both heated rage and cold calculation.
In 1988, motorists discover human body parts dumped along the highway, touching off a murder manhunt.