Quiet serial killers may hide in plain sight as DNA unmasks dead 1970s Pennsylvania strangler, expert says

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• Fox NewsRight·1h ago

  Quiet serial killers may hide in plain sight as DNA unmasks dead 1970s Pennsylvania strangler, expert says

  James Richard Clark Sr. left DNA at both 1970s crime scenes, but advanced cybergenetics testing has only recently linked him to the two killings.

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