that -- who this has happened to that could help authorities identify or build a case against the -- the person who did it? >> i think this is a very complicated case because they were -- they were engaged to be married. they were -- they were living together. they were in the van together all the time. finding brian laundrie's dna or trace evidence on the remains is not going to tell us very much. however, if we now know that she was manually strangled, then finding his dna or trace evidence where the pressure was excerpted by the hands and fingers on the neck, that would be very revealing. and that could be used in court to make the case. i mean, right now he is not even a suspect. he's still a person of interest. so there's a lot of loose ends here that need to be hooked up before any kind of trial. that's if brian laundrie is ever found.