Vanished, Part 4

>>> what happened to michelle le? a well-lit parking garage under the protective watch of 18 surveillance cameras. there was one camera right above michelle 's car that would have revealed everything, but that night the camera wasn't working. what happened in those missing minutes? the police remember when talking to the family. so the family pursued its own line of investigation.

>> we're looking to human trafficking patterns and --

>> human trafficking patterns.

>> yeah.

>> you thought that was a possibility?

>> we did. yeah.

>> that was a dead end . then june 30th , 34 days into michelle 's disappearance the le family cop tacted us to say they'd begun working with a private investigator, a man named michael fame and in the midst of the investigation he sat down with us to tell us what he had learned.

>> this happened quickly. this was a parking garage . people come and go from that garage all night. someone was lying in wait and they knew at one point she would return to her vehicle and it was a number of hours before her shift was going to be over and they were prepared to abduct her at that time.

>> does anyone know why she went there?

>> not at this time.

>> unusual thing to do?

>> it was a quick break or something drew her out to her car. that, we still don't know, but she was still dressed in white hospital scrubs and it was evident that she was going come back because she left her belongings in the hospital.

>> remember, when police found michelle 's car about half a mile parked in a residential area they hadn't revealed yet what evidence they'd found inside, but fame had found out a thing or two about the car and how it got there.

>> did anybody see the car arrive?

>> there was a report of a witness who stated that her conversation -- the headlights shining in her house and conversation coming from the car at 4:00 the following morning.

>> conversation?

>> people talking. the people that reported this saw headlights shining through their window and they believe it came from the general direction of where michelle 's car was found.

>> multiple kidnappers, almost had to be, said fame.

>> i think when you looked at the circumstances and their totality, how this person was waiting for her and the fact that she was put into her vehicle quickly, driven out quickly, that there may be a possibility of more than one person.

>> and he was almost sure , not strangers.

>> this is someone that michelle had some type of contact with that saw her, that knew her, that knew where she parked her vehicle, knew what she drove and knew where she worked and knew she'd be at work.

>> so it may be members of her family or her friends and they know who this is, they know the person who did it just may not be aware that they know if they just looked through what the relationships were the answer may be in there somewhere.

>> the answer, i think in this case, was not far off.

>> the police had questioned michelle 's family, current and former friends, old boyfriends, but it didn't seem like they were getting anywhere. fame thought the investigation was in trouble.

>> when your investigation has run cold and you don't have a viable suspect, when you don't have information that's going to lead you to a suspect, i think it's important that you start looking at viable alternatives. too often these cases go cold for five, ten years. from what we've seen so far that was a possibility.

>> the le family was working with fame because they were frustrated with police and now fame tried to do something that police couldn't.

>> what we've done is put out information to anyone who may know something or potentially be involved or think they know who is involved and they called us confidentially without contacting police and we'll provide that information to the right authority ands protect people if they need protection.

>> soliciting tips from people who were afraid to call the cops. would his plan work? wait and see.

>>> coming up, "dateline" is there when that private tip line gets a dramatic call.

>> what is this guy saying? what did he tell you?

>> he said he has information to where michelle may be. would he lead them to michelle when "dateline" continues. announcing