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The Plastic Cup That Solved a 30-Year Cold Case | True Crime Documentary

2025-08-22 19 Dailymotion

The murder of a college student in November 1989 left a community heartbroken and investigators baffled. Mandy, a freshman at Central Washington University, was found in a river just a few miles from her home, and police immediately suspected foul play. But with no witnesses and no leads, the case went cold for over three decades.

This video dives into the unbelievable turn of events that finally brought justice to this case. Discover how a surprising new lead and the power of DNA from a discarded item finally exposed the killer after 30 years.

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