Sneak peek: What Does the Other Woman Know? The Disappearance of Jennifer Dulos

Newly-released video shows police grilling Michelle Troconis, the ex-girlfriend of Fotis Dulos, about the disappearance of his wife Jennifer: “I didn’t do it.” But does she know more? "48 Hours" correspondent Erin Moriarty reports Saturday, February 13 at 10/9c on CBS.