Cold Case
Penny Marshall examines how advances in science are allowing the police to reopen unsolved cases
Cold Case - Episode 1
Penny Marshall examines how advances in science are allowing the police to reopen unsolved cases. She follows West Yorkshire Police as they bring a rapist to justice after 20 years.
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Cold Case - Episode 2
Penny Marshall examines how scientific advances allow police to reopen unsolved cases. She looks at the problems behind old cases and the issues raised by DNA technology.
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