Former Bolingbrook Police Sgt. Drew Peterson arrives at the Will County courthouse in May 2009 for his arraignment on murder charges in the death of his third wife, Kathleen Savio. | SUN-TIMES MEDIA

Retired Bolingbrook Police Sgt. Drew Peterson arrives at the Will County Courthouse in Joliet on May 8, 2009, for arraignment on charges of first-degree murder in the death of his former wife, Kathleen Savio. | M. Spencer Green~AP file photo

Kathleen Savio, the third wife of Drew Peterson, was killed in 2004. | Photo courtesy of Marsha Savio

Stacy Peterson disappeared in 2007.

Drew Peterson's lawyers (left to right) Steven Greenberg, Joseph Lopez, Joel Brodsky and Darryl Goldberg talk to the media outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Drew Peterson (top right) is led to the Will County Courthouse for a hearing Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Steven Greenberg, one of Drew Peterson's lawyers, addresses the media outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Joseph Lopez, one of Drew Peterson's lawyers, stands outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Joel Brodsky, one of Drew Peterson's lawyers, addresses the media outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Drew Peterson's lawyers (from left to right) Darryl Goldberg, Joel Brodsky, Joseph Lopez and Steven Greenberg address the media outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Darryl Goldberg, one of Drew Peterson's lawyers, stands outside the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Will County State's Attorney James Glasgow (right) addresses the media following a hearing for Drew Peterson at the Will County Courthouse Friday, May 4, 2012, at 14 W. Jefferson St. in Joliet. | Matthew Grotto~Sun-Times Media

Drew Peterson

Stacy Peterson, 19, stands with husband Drew Peterson in November 2003. | Submitted by Candace Aikin