The Vaughn family, (upper left to right): Christopher, Kimberly, Abigayle, and (bottom from left) Cassandra and Blake are shown in an undated photo in front of Rosemont Theater in the Chicago area, where the Phoenix University graduation was held.
Chris Regis, Left, Jim Long, center, and Adam Capelli carry out evidence in the Christopher Vaughn trial, outside the Will County Courthouse in Joliet, IL on Tuesday September 4, 2012. | Matt Marton~Sun-Times Media
Christopher Vaughn. Photo input: 8/15/12. Will County Sheriff's Office.
Illinois State Police Sgt. Gary Lawson returns from lunch break during the Christopher Vaughn murder trial at the Will County Courthouse Tuesday, August 28, 2012, in Joliet. | Matthew Grotto~Sun-Times Media
Blake Vaughn, 8; Christopher Vaughn, 32; Cassandra Vaughn, 11; Kimberly Vaughn 34; and Abigayle Vaughn, 12; smile in their Oswego home. Kimberly Vaughn and the three children were found shot to death in the family SUV in 2007. | Submitted photo
Christopher Vaughn, of Oswego, is on trial in Will County for the murder of his wife, Kimberly, and their children in 2007. | Will County Sheriff's Office via AP
Dr. Larry Blum is seen here outside the Drew Peterson murder trial last month.
Prosecutors Chris Regis (left) and Jim Long (right) are seen outside during the Christopher Vaughn murder trial at the Will County Courthouse Thursday, Sept. 6, 2012, in Joliet. | Matthew Grotto~Sun-Times Media