killed in her parents' home where she and her family had been living. >> typical scenario? robberies happening in peoria? this one just happens to be a lot worse? >> it's not typical as far as a burglary that results in a murder. that doesn't happen very often. >> reporter: this was an odd one. detectives needed to know more about denise and began questioning her family, including nathan, her husband of 17 years. >> you talking to us and cooperating with us is the best information that we can get. >> we want to talk to the people closest to her first to try to figure out what makes her tick, what's her routine like. >> did you start to think that someone may have targeted denise? >> well, you know, we didn't know. i mean you know, nathan he's gonna be our best witness. you know, you're livin' with this lady and you've been married for a long time. you know her routine. >> did you think maybe someone had a reason to be in that house, outside of just a random burglary? >> we didn't know.