now investigator ulrich typed marty larson in the database. >> it popped up. inal trespass. >> remember, susie married ted pretty quickly after she left marty back in 1998, but that wasn't the end of it. not long after the wedding apparently in a fit of heat, marty drove three miles down the road to the newlywed's house with a shotgun. what he intended to do was never made clear but he was convicted of criminal trespass and was slapped with a lifetime restraining order. no contact with susie or ted ever. >> at that point i had a little red flag go up and said, boy, this is something we need to look at here. >> reporter: to judge from his 22 phone messages, marty, his given first name walter, was very worried about susie, desperately, as though his nighttime hours went by without a word from her but he still lived three hours away from billings. was that where he was calling from? one sure fire way to find out, check the cell towers. >> we started seeing him pinging from billings all the way to glendale. >> it's a long, lonely road under the montana moon, and ev