Tricia Pacaccio was 18 when she was fatally stabbed multiple times on the back doorstep of her family home in Glenview, Illinois, on August 13, 1993. Her father found her body the next morning. Initial investigation produced promising leads but no charges for years.

DNA evidence later linked neighbor Michael Gargiulo, who lived a block away and had been a high school acquaintance of Tricia’s brother, to the crime. Gargiulo moved to California in 1998 and was later arrested there in 2008; in 2011 he was charged in Illinois in connection with Tricia’s murder. Prosecutors faced procedural problems with the DNA evidence that delayed prosecution, and witness statements emerged alleging Gargiulo confessed in the late 1990s.

Tricia’s family continued to seek justice as the case proceeded through extradition and pretrial stages. Did anyone in Glenview around 1993 remember Tricia, her family, or anyone acting suspiciously near their home that summer?