Robert Durst Goes News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Investigators also working the case, a possible connection. >> there were credit card records that placed durst in the eureka area the day that this girl disappeared. >> reporter: the transaction was just up the coast in trinidad, maybe 20 minutes or so by car from that spot where the witness saw a girl picked up on the road in eureka. and then, before the trial in galveston, birkbeck heard this. >> i have a really good source that was close to the defense team. and i was told that durst, he was extremely concerned about karen mitchell. and was so concerned that he thought he was going to get ...

>> so now two fbi agents show up at the hotel and they're talking to the clerk. "well, do you have anyone booked here under the name of dorothy ciner?" "no." they go through ten other aliases. no. no. no. damn. where is he? they turn around and there's bob walking in the lobby, headed for the elevators. >> reporter: later they accompanied him to his room. >> and ultimately they turn up cash, a gun and some pot. >> reporter: so durst was booked for possession of a handgun and marijuana in louisiana and also arrested for the murder of susan berman in los angeles. and the very next day the final ...

California, where bob durst came to -- what? get lost himself? it was 1995, after he was dumped from the company, 13 years after kathy disappeared. bob walked into the office of local real estate broker gene davenport. >> he told me he was a writer for "the wall street journal." he said he wanted to have a place with an ocean view. >> reporter: bob forked over nearly $400,000 in cash for a big family house in the town of trinidad, overlooking the pacific, where he lived like a hermit. >> nobody really seen him around. he never really had contact or didn't really have any best friends. >> repor...

I saw. >> reporter: so how sure are you you got it right? >> i'm positive. in my heart i know i have it right. >> reporter: and gomes is fairly certain, he said, the girl who got in the car looked like a photo the police showed him of karen mitchell. >> but it was her because she -- we made eye contact. >> reporter: but issues. there is no proof that it was karen mitchell who got into the car. and bob durst's eyes are not blue. and, said chief mills, gomes didn't come forward until months after the incident. >> what we don't want to do is just take something that's, you know, sensational and p...

>> bob is endlessly fascinating and -- and always surprises me. >> reporter: he has certainly been elusive, mercurial, sometimes desperate and always in motion. we'll track him, his descent, his strange detour off the road, off the grid. a life that no one, not even his family or close friends, could fathom. >> he has a good heart inside, i really think so. >> reporter: we begin with two people who have known and loved the man they call bobby, godfather of their son, close friend of more than 40 years. long before the rest of the world heard of him. >> and when did you meet him? >> we went to ...