it all checked out as that local woman, nicole pietz, who had been missing for a week. bracelet she walls wore was not on her wrist, but police were confident enough in their tentative i.d. to pay a visit to nicole's husband, david. and the information david pietz would soon share with detectives about when his wife was last seen and what she left behind would be critical to the case. >> but it was something that was missing that turned out to be even more important, and puzzling. >> there's no indication that anyone else had been behind the wheel of nicole's car. >> when "dateline" continues. one week? that's just my speed. rapid wrinkle repair. and for dark spots rapid tone repair. from neutrogena®. [ male announcer ] this is smooth and precise on-road handling. this is easy-to-use off-road capability when you need it. this is seventy and counting safety and security features. ♪ this is total confidence and comfort. in the middle of crowds or in the middle of nowhere. this is the freedom to keep chasing all the horizons you want. introducing the all-new 2014 jeep cher