would only get worse. because crystal taylor wasn't the only one killed by that bullet. coming up, police drill down in the search for a suspect. >> we tend to focus on relatives or relationship partners. >> the men in crystal's life. one, two, three of them. >> we're trying to find out who would have the motivation to do this. >> when "dateline" continues. (burke) at farmers insurance, we know a thing or two because we've seen a thing or two. even a- (ernie) lost rubber duckie? (burke) you mean this one?