CHICAGO (CBS) — Today marks ten years since the disappearance of Stacy Peterson.

She is the fourth wife of convicted murderer Drew Peterson.

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Stacy wanted out of her marriage to Drew when she vanished.

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He is serving a 38-year sentence for killing his third wife Kathleen Savio in 2004.

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Although her death initially was ruled an accident, authorities reopened the case after Stacy disappeared.