Kimberly Ellen Phillips Vaughn, 34, and her three children — Abigayle Elizabeth, 12, Cassandra Ellen, 11, and Blake Philip, 8 — were found shot to death on June 14, 2007, on a service road near Interstate 55 in Channahon Township, Illinois. They were discovered in the family’s red Ford Expedition; a handgun was recovered at the scene and Kimberly and the children had sustained gunshot wounds.

Initial reports did not name Kimberly’s husband, Christopher Vaughn, as a suspect. Police later revealed he had been shot in the thigh but survived. Christopher Vaughn was subsequently accused, charged, and convicted in the deaths of his wife and children. Gunshot residue testing was performed on Kimberly’s hands during the investigation. The family’s deaths drew extensive media attention and community mourning.

Did anyone in the area know the Vaughn family’s routine, relationships, or any tensions that might shed light on what happened that day?