we are-- robin owens: oh, god. oh, god. . >>> hello, i'm greg melvin and this is "dateline." >>> ma'am, hold on, hold on, ma'am. >> i just heard she is gone. >> she was a bright young mom to be. >> she was beautiful, confident, strong. >> it was her smile that got me. >> moving on from a messy divorce, jumping into a new romance. no one could believe it when they found her. >> they are saying it was a homicide. >> then the police found something else. recordings. recordings. >> everyin it started with a little flirtation in the office and bloomed into a full-blown romance. hello. and welcome to "dateline." it started with a little flirtation in the office and bloomed into a full blown romance. problem was, brittany eldridge was married to another man. then, she found out she was pregnant and it was weeks before her due date that tragedy struck. investigators quickly hone in on the two men in brittany's life. but >> imagine all of your phone conversations being recorded for prosperity. how would you feel. what secre