In their continuing investigation into the disappearance of Stacy Peterson, authorities exhumed the body of Kathleen Savio this morning. Savio, Sgt. Drew Peterson's third wife, was found dead in her bathtub in 2004. For more information, click here. Last night, the daughter of Peterson's second wife, appearing only in shadow, told Greta Van Susteren that Peterson—whose fourth wife, Stacy, has been missing for more than two weeks—was controlling and abusive when he was married to her mother, and cheated on her with third-wife-to-be Savio. Peterson's former stepdaughter also alleged that Peterson told her mother he could kill her and make it look like an accident, so he'd never be caught. "I know [my mother] still fears him,” she said.