investigators got a break. a tipster told police that his friend, geovany rivera, killed amber belken while robbing the store where both men once worked. detectives believed the story but didn't have enough evidence to make an arrest. now someone else close to geovany was about to step forward, and her chilling tell would blow the case wide open. here again, keith morrison with "everything she knew." late june, almost a year and a half after the murder of amber belken, detective ray bob roberts roared down the highway to laredo. he had just gotten a call from the police there. geovany's wife wanted to talk. her name was veronica, and what a story she told. >> i made a dumb choice. i was really young and i got pregnant really young. >> still in high school? >> yeah. >> she had tried to resist him, she said, wasn't attracted that way, but he was so insistent.