For the first time since Natalie Wood's body was pulled from the cool Pacific waters off Catalina Island in 1981, investigators have publicly identified a "person of interest" in the superstar actress's death. A Los Angeles Sheriff's detective says her husband, actor Robert Wagner, is a person of interest in the wake of new evidence from witnesses who recently came forward. Nancy Grace discusses what's new in this infamous cold case with Marti Rulli, author of "Goodbye Natalie, Goodbye Splendour, Cold Case Research Institute director Sheryl McCollum, and RadarOnline.com reporter Alexis Tereszcuk.