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 secrets would it will? >> this story begins here in a suburban office. like any office in america, when workers here talk on their desk phones, every word was captured. >> she always looked like she is about to kill somebody. >> and, oh, the stories they told. unfiltered and internet. with details about office remanses >> romances. >> he was so hot. >> maybe clues about a murder. >> this was a real whodunit. norman clark loves sports. his mother says he was a top athlete and a good son, too. >> he was a loving, hard worker, caring person. >> as a boy, norman had dreams of playing in the nba. studied sports management in college. by his mid-20s he was working here vanderbilt mortgage and finance. 23-year-oldbrittany started the