heather elvis. nationwide when she vanished. >> she had a new job. she was going on a first date. >> it was overwhelmingly horrible. >> where she at? >> police work the clues, her car abandoned. >> i was scared to death. >> a mysterious caller captured on camera. >> why would this person call from a payphone, in the middle of the night? >> then came the secret. >> she was married. >> rumors about her being pregnant. >> she truly did believe that she was gonna leave his wife. >> anger, betrayal, revenge. >> a bomb exploded. it was world war three. >> this crazy love triangle, create napping, potential murder. >> yes. >> this is heather's life or talking about. >> terrifying. when you see your parents hurting, you wish that you could take all their pain away. and with something like this, it's impossible. >> hello and welcome to dateline. heather elvis was charging headlong into her future. an independent young woman eager to make her mark on the world. then one night, she disappeared. investigators w

. >> her name is heather elvis. it was news nationwide when she vanished. >> she had a new job.