On a sweltering August day in 1992, Tammy Jo Zywicki dropped her younger brother off at Northwestern University in Illinois, and set out for Grinnell College in Iowa, excited for her senior year.
The 21-year-old never made it.
Hours after Tammy left the Chicago area and headed west toward Iowa on I-80, her white 1985 Pontiac 1000 hatchback was found abandoned on the side of the road, five miles east of LaSalle, Illinois.
Tammy — an upbeat, athletic, talented amateur photographer from Marlton, New Jersey — was nowhere to be found.
For nine days, her family, friends and the police looked for her.
Their desperate search ended on Sept. 1, when a driver spotted her body, wrapped in a blanket, on the side of a Missouri interstate.
"I was just numb," Tammy's mother, JoAnn Zywicki, now 78, tells PEOPLE about learning her daughter was dead. <more at link>
College Student Was Brutally Slain on Drive to Campus in 1992: Will DNA Advances Catch Her Killer?
The Tammy Zywicki murder case is the focus of the March 22 season premiere of <em>People Magazine Investigates</em>, airing at 10 ET/9 CT on Investigation Discovery and discovery+
An #IOWA college student went missing in 1992. Later, she was found murdered and wrapped in a blanket. Who killed her?
For nearly three decades, police have been hunting for answers about who killed Tammy and how her remains ended up 500 miles south from where she was last seen.