Dateline - Season 29 Episode 9
When college student Helene Pruszynski is found murdered, her case remains cold for nearly 40 years until a new detective uses an innovative method to catch the killer. Josh Mankiewicz reports.
- Genre: News, Documentary
- Studio: NBC
- Stichwort: homicide, interview, murder, true crime, missing person, investigative journalism, news magazine, homicide investigation, serious, mysterious disappearance, mystery, correspondent
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