Poweshiek County in Iowa
Cold Cases in Poweshiek County, Iowa
Grinnell, IA student
Departed Evanston, IL, to return to Iowa
Body found in Lawrence County, MO
DOD: August 23, 1992
On August 23, 1992, Tammy J. Zywicki departed Evanston, Illinois, for college in Grinnell, Iowa, where she was expected to arrive that evening. Later that day, Zywicki’s car — a 1985 Pontiac T1000 with New Jersey license plates — was found by an Illinois State Trooper and ticketed as being abandoned.
On September 1, 1992, Zywicki’s body was located along Interstate Highway 44 (I-44) in rural Lawrence County, Missouri, which is located between Springfield and Joplin, Missouri. She was wrapped in a red blanket bound with duct tape, had been sexually assaulted and stabbed eight times: once in the arm and seven times in the chest.