In 1986, the LAPD arrives at a murder scene that seems clear cut, but the case quickly goes cold. Twenty years later, DNA testing provides a stunning new lead.
In 2002, armed with DNA and a license plate from a violent rape case, a detective thinks he has an easy case, but neither provides a match; the case goes cold until the groundbreaking Combined DNA Index System finds a hit 5 years later.
The first victims of America's most prolific serial killer were found in 1982; the killer was at large for two decades, but was caught after forensic microscopy linked particles from the victims' clothes to the killer
In 1996, a bomb goes off at the Atlanta Olympics killing one and leaving hundreds injured. After a further 5 bombs are detonated, the FBI, ATF and GBI realize they're dealing with a serial bomber.
