her front door. she never made it. we can t explain what happened in those 20 steps. it just didn t make sense to me. a working mom murdered. it was hard to imagine that anybody would be capable of something like that. reporter: police started with the men in her life. was one of them behind her death? everybody was a suspect. the estranged husband. you know you are a person of interest. the ex. oh susie where are you? the brand new boyfriend. and the unbelievable thing, they were all there the morning of the murder. so who did it? my stomach was in my throughout. all of us were a little taken aback. it was hard for my brain to wrap around that. the spring air was a cold blanket around the pickup reporter: it was early morning. still dark. the spring air was a cold blanket around the pickup parked an runs near the main street of little glendive, montana. at 5:20 a.m., the passenger side door opened, the woman got out and made it to her apartment.