Cold Case

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

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Episodes

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01*20080723

Penny 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?

02 LAST*20080730

She looks at the problems of revisiting old cases and the issues raised by the latest DNA techniques.