Stacie Williams, 35, of Granite City, Illinois, was found dead on February 18, 2015, slumped at the wheel of her running 2013 Dodge Avenger at the intersection of 25th Street and Madison Avenue. The preliminary cause of death was a single gunshot wound to the head. She was the mother of three daughters.

Investigators quickly identified 31-year-old Cory L. Osborne of Alton, Illinois, as a suspect. Osborne had a prior conviction for reckless discharge of a firearm in 2010 and was facing a pending misdemeanor domestic violence case naming Williams as the victim. Authorities said he was charged with two counts of first-degree murder tied to the same act; investigators noted internet searches by Osborne about how to kill someone with a single gunshot to the head that occurred both before and after the killing.

The case underscores the deadly consequences of domestic violence and the impact on Williams family. If anyone knew Stacie, her movements that day, or has information about the case, please come forward.