all struggled with adridiction d serious financial problems. detectives were far from answers, but that would change when someone gave them a name that led to a crucial discovery. here's keith morrison with more. >> reporter: like it or not it's a fact, an element of human nature. some people have affairs. some of them just flings and others a lot. as they poked through his life. one name kept popping up. chandy. her full name, chandrika creech. she'd already told the detectives that she and gavin had an affair years earlier. and that he called her right before he vanished. but now, nine months after gavin disappeared, the detectives got a tip.