Story about Code of a Killer / 侦凶第一季 / 杀手密码 / 真凶密码 第一季
The story of Alec Jeffreys' discovery of DNA fingerprinting and its firt use by DCS David Baker in c...
The story of Alec Jeffreys' discovery of DNA fingerprinting and its firt use by DCS David Baker in catching a double murderer.
DCS David Baker headed up the investigation into the brutal murder of two Leicesterhire schoolgirls between 1983 and 1987. Only a few miles away, Dr Alec Jeffreys, was a scientist at Leicester Univerity who, on 10 September 1984, invented a remarkable technique to read each individual's unique DNA fingerprint. When a local teenager admitted to one of the murder but not the other, Baker asked Jeffreys to analyze the DNA evidence left at the crime scenes. Both men were shocked to discover that the teenager was innocent, his confession false. DCS Baker then took the extraordinarily brave step to launch the world's firt ever DNA manhunt, testing over five thousand local men to track down the killer.