Drew Peterson insists Stacy told him she was planning to run off with another man. Her family believes she would never leave her children.
Investigators are treating the case as a possible homicide with Drew Peterson as a suspect. A grand jury is looking into Stacy's disappearance, as well as the death of Drew Peterson's ex-wife, Kathleen Savio.
Peterson denies wrongdoing in both cases.
Drew Peterson's $25,00 reward is for information that leads to the safe return of Stacy, according to attorney Joel Brodsky.
