Can we still rely on DNA sampling to crack crime?

ProfileIn 1988, Pitchfork admitted raping and murdering two 15-year-old girls, Lynda Mann and Dawn Ashworth, after his DNA matched samples found at the scene of both crimes.
The former baker was caught after the world’s first mass screening for DNA, in which 5,000 men in three villages in Leicestershire were asked to volunteer blood or saliva samples; he’d initially evaded capture by getting a friend to take the test for him.

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