JOLIET, Ill. — She loomed over Drew Peterson's murder trial, though her disappearance and the suspicion that the former Illinois police officer killed her was never mentioned in front of the jury.

But since jurors found Peterson guilty Thursday of first-degree murder in the 2004 death of his third wife, Kathleen Savio, his fourth wife, Stacy Peterson, now takes center stage.

"We are going to aggressively review that case with an eye towards potentially charging it," Will County State's Attorney James Glasgow told reporters outside the Joliet courthouse shortly after jurors convicted Drew Peterson of killing Savio.