to the chest, one in the throat, and three in the back. >> reporter: -- telling them the evidence would point to anna's ex-husband. >> and the killer in this room is robert moses. and there will be no doubt in your mind. walker was promising a strong case, but what's a prosecutor to do about all those men in anna's life? she knew the defense would try to cast them as alternative suspects. no shortage of potential persons of interest here? >> anybody who's gonna be in a circumstantial case where there aren't any witnesses, you start looking at people and you say "who are the people closest to her?" you know, boyfriends, friends, uh -- anybody that's had any sort of relations to her. >> reporter: so, in an unusual move, walker decided to preempt the defense and call those men as her own witnesses. she began with anna's boyfriend, michael stodnick, who said he was intrigued by anna the day they met. >> she was an amazing woman.