• 3 years ago
In 1992, Tammy Zywicki was driving to her senior year at Grinnell College. The 21-year-old never made it to campus. Investigators have reason to believe that with new DNA technology, the case might soon be solved.
Watch the full episode of People Magazine Investigates “Highway of Horrors” on discovery+ ➡️http://discoverypl.us/true_crime

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