Missing

On a snowy day in February 1977, Leslie Guthrie left her home in suburban New York in a car with her two small children, only to never be seen again. Leslie's family says just before they disappeared, Leslie was having problems in her marriage

One of the last phone calls William "Billy" Smolinski made before disappearing in August 2004 was to a man who was also romantically involved with a woman Billy had been dating. Billy left a voicemail telling the man to "watch his back."

Their bones may have been found, but their identities are still missing. Inside an office of the New York City Medical Examiner, dozens of clay faces are perched on shelves. They're the faces of people whose skeletons have been found in New York City but have never been identified.