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"With modern day extraction, the recovery of biological materials is far greater"
Harnessing the power of modern DNA techniques, detectives have been able to identify their suspect in a rape case that has聽gone unpunished for nearly 30 years.
Duration:
More clips from Cold Case Investigators: Solving Britain鈥檚 Sex Crimes
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"It's his DNA"—Series 1, Episode 1
Duration: 01:21
