The Secret Life of Paige Birgfeld

On June 28, 2007, Colorado mother Paige Birgfeld disappeared and police uncovered a subsequent double-life she led as an escort. Initially the investigation focused on her two ex-husbands, but when both men were ruled out, police looked into the possibility that Paige was murdered by one of her clients. "48 Hours" correspondent Erin Moriarty reports. This cl…