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0120080723Penny Marshall examines how advances in science are allowing the police to reopen unsolved cases.

She follows West Yorkshire Police's cold case unit as it brings a rapist to justice after 20 years and hears the victim's moving testimony. Is this the biggest revolution in policing since fingerprints?

Penny Marshall follows West Yorkshire Police as they bring a rapist to justice.

Penny Marshall examines how science is allowing the police to reopen unsolved cases

0220080730Penny Marshall looks at the problems and the issues raised by the latest DNA techniques.

Penny Marshall examines how science is allowing the police to reopen unsolved cases