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.